diff --git a/.vscode/launch.json b/.vscode/launch.json
index 39c6af3..b6a81d5 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -8,7 +8,21 @@
             "name": "sync: pokeblue",
             "type": "cppvsdbg",
             "request": "launch",
-            "program": "target/debug/examples/sdl2_emulator.exe",
+            "program": "target/debug/ferretro-synced.exe",
+            "args": ["--core", "./data/gambatte_libretro.dll", "--rom", "./data/pokeblue.gb", "--state", "./data/pkblue-route1.sav"],
+            "stopAtEntry": false,
+            "cwd": "${workspaceFolder}",
+            "environment": [{
+                "name": "RUST_BACKTRACE",
+                "value": "full"
+            }],
+            "externalConsole": false,
+        },
+        {
+            "name": "sync: pokeblue 2",
+            "type": "cppvsdbg",
+            "request": "launch",
+            "program": "target/debug/ferretro-synced.exe",
             "args": ["--core", "./data/gambatte_libretro.dll", "--rom", "./data/pokeblue.gb", "--state", "./data/pkblue-route1.sav"],
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}",
@@ -22,7 +36,7 @@
             "name": "sync: sonic2",
             "type": "cppvsdbg",
             "request": "launch",
-            "program": "target/debug/examples/sdl2_emulator.exe",
+            "program": "target/debug/ferretro-synced.exe",
             "args": ["--core", "./data/genesis_plus_gx_libretro.dll", "--rom", "./data/sonic2.bin"],
             "stopAtEntry": false,
             "cwd": "${workspaceFolder}",
diff --git a/Cargo.lock b/Cargo.lock
index 88fc1e5..fb27344 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -8,6 +8,11 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ascii"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "atty"
 version = "0.2.13"
@@ -42,11 +47,50 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "base64"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "safemem 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "base64"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "byteorder"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "bytes"
+version = "0.4.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "c2-chacha"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cc"
 version = "1.0.48"
@@ -79,6 +123,20 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "core-foundation-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.4.0"
@@ -87,6 +145,15 @@ dependencies = [
  "crossbeam-utils 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.7.0"
@@ -142,6 +209,7 @@ dependencies = [
 name = "ferretro-synced"
 version = "0.1.0"
 dependencies = [
+ "ascii 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-channel 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -151,14 +219,65 @@ dependencies = [
  "num-derive 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_bytes 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "websocket 0.24.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "fuchsia-zircon"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fuchsia-zircon-sys"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "futures"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "getrandom"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -167,6 +286,74 @@ dependencies = [
  "unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "httparse"
+version = "1.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "hyper"
+version = "0.10.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "base64 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mime 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "idna"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-normalization 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "iovec"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "itoa"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "kernel32-sys"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "language-tags"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -194,6 +381,104 @@ dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "log"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "log"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "matches"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "maybe-uninit"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "mime"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "mio"
+version = "0.6.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "miow"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "native-tls"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.10.26 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.53 (registry+https://github.com/rust-lang/crates.io-index)",
+ "schannel 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "security-framework 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "security-framework-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "net2"
+version = "0.2.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "num"
 version = "0.1.42"
@@ -284,6 +569,15 @@ dependencies = [
  "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "num_cpus"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "hermit-abi 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "num_enum"
 version = "0.4.2"
@@ -304,6 +598,75 @@ dependencies = [
  "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "openssl"
+version = "0.10.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.53 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "openssl-probe"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "openssl-sys"
+version = "0.9.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "percent-encoding"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "pkg-config"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "proc-macro-crate"
 version = "0.1.4"
@@ -372,6 +735,18 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.1.1"
@@ -381,6 +756,15 @@ dependencies = [
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.3.1"
@@ -394,6 +778,14 @@ name = "rand_core"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "rand_core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.1.0"
@@ -402,6 +794,14 @@ dependencies = [
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_isaac"
 version = "0.1.1"
@@ -458,11 +858,56 @@ dependencies = [
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+
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@@ -485,10 +930,96 @@ dependencies = [
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@@ -547,6 +1078,19 @@ dependencies = [
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+dependencies = [
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+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -555,6 +1099,95 @@ dependencies = [
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+ "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "tokio-reactor 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -563,6 +1196,40 @@ dependencies = [
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+[[package]]
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@@ -583,11 +1250,80 @@ name = "unicode-xid"
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@@ -597,6 +1333,11 @@ dependencies = [
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diff --git a/Cargo.toml b/Cargo.toml
index 193f90d..4e49823 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,9 +14,13 @@ libloading = "^0.5"
 num = "0.2"
 num-derive = "0.3"
 num-traits = "0.2"
-
-[dev-dependencies]
-# example: sdl2_emulator
 sdl2 = "^0.32"
 crossbeam-channel = "^0.4"
-structopt = "^0.3"
\ No newline at end of file
+structopt = "^0.3"
+serde = { version = "1.0.104", features = ["derive"] }
+serde_bytes = "0.11"
+serde_json = "1.0.44"
+websocket = "0.24.0"
+ascii = "1.0.0"
+
+[dev-dependencies]
\ No newline at end of file
diff --git a/examples/sdl2_emulator.rs b/src/emulator/emulator.rs
similarity index 79%
rename from examples/sdl2_emulator.rs
rename to src/emulator/emulator.rs
index 8aa6e5b..cdd999c 100644
--- a/examples/sdl2_emulator.rs
+++ b/src/emulator/emulator.rs
@@ -1,25 +1,20 @@
-extern crate crossbeam_channel;
-extern crate ferretro;
-extern crate sdl2;
-
 use ferretro::retro;
 use ferretro::retro::ffi::{GameGeometry, SystemInfo, SystemAvInfo, MemoryMap};
 use ferretro::retro::constants::{InputIndex, JoypadButton, AnalogAxis, DeviceType};
 use ferretro::retro::wrapped_types::{ControllerDescription2, InputDescriptor2, InputDeviceId, SubsystemInfo2, Variable2};
 use ferretro::retro::wrapper::LibretroWrapper;
 
-use ferretro_synced::sync::memory_rw::MemoryRw;
-use ferretro_synced::sync::pokemon_rb::SyncedPokemonRedBlue;
+use crate::sync::game::{SyncableGame, KnownGames, read_game_name, create_game};
+use crate::emulator::libretro_memory_map::LibRetroMemoryMap;
+use crate::emulator::metadata_reader::{GameInfo, get_game_info};
 
 use std::ffi::CStr;
 use std::io::Read;
-use std::path::{Path, PathBuf};
 use std::pin::Pin;
+use std::path::{Path, PathBuf};
 use std::time::{Duration, Instant};
 use std::convert::TryFrom;
 
-use structopt::StructOpt;
-
 use sdl2::audio::{AudioCallback, AudioFormat, AudioSpec, AudioSpecDesired, AudioDevice};
 use sdl2::controller::{GameController, Button, Axis};
 use sdl2::event::Event;
@@ -27,7 +22,7 @@ use sdl2::keyboard::Keycode;
 use sdl2::rect::Rect;
 use sdl2::render::WindowCanvas;
 
-struct MyEmulator {
+pub struct MyEmulator {
     retro: retro::wrapper::LibretroWrapper,
     core_path: PathBuf,
     sys_path: Option<PathBuf>,
@@ -36,6 +31,7 @@ struct MyEmulator {
 
     sys_info: SystemInfo,
     av_info: SystemAvInfo,
+    pub game_info: Option<GameInfo>,
 
     sdl_context: sdl2::Sdl,
 
@@ -54,10 +50,8 @@ struct MyEmulator {
     gamepads: Vec<GameController>,
     pressed_keys: Vec<Keycode>,
 
-    // memory
-    memory_map: Vec<MyMemoryMap>,
-
-    synced_pokemonrb: SyncedPokemonRedBlue,
+    pub memory_map: Option<LibRetroMemoryMap>,
+    synced_game: Option<Box<dyn SyncableGame>>,
 }
 
 impl MyEmulator {
@@ -124,8 +118,11 @@ impl MyEmulator {
 
         let pressed_keys = Vec::new();
 
-        let memory_map = Vec::new();
-        let synced_pokemonrb = std::default::Default::default();
+        /*
+        let memory_map = std::default::Default::default();
+        let which_game = read_game_name("whatever");
+        let synced_pokemonrb = SyncedPokemonRedBlue::create(memory_map);
+        */
 
         let emu = MyEmulator {
             retro,
@@ -134,6 +131,7 @@ impl MyEmulator {
             preferred_pad: None,
             av_info,
             sys_info,
+            game_info: None,
             sdl_context,
             canvas,
             pixel_format,
@@ -144,8 +142,8 @@ impl MyEmulator {
             gamepad_subsys,
             gamepads,
             pressed_keys,
-            memory_map,
-            synced_pokemonrb,
+            memory_map: None,
+            synced_game: None,
         };
         let mut pin_emu = Box::pin(emu);
         retro::wrapper::set_handler(pin_emu.as_mut());
@@ -153,6 +151,10 @@ impl MyEmulator {
         pin_emu
     }
 
+    pub fn begin_sync(&mut self, synced_game: Box<dyn SyncableGame>){
+        self.synced_game = Some(synced_game);
+    }
+
     pub fn run(&mut self) {
         self.audio_device.resume();
         let mut event_pump = self.sdl_context.event_pump().unwrap();
@@ -172,6 +174,18 @@ impl MyEmulator {
 
             self.update_key_state(&event_pump.keyboard_state());
 
+            match &mut self.synced_game {
+                Some(g) => {
+                    match g.handle_inbound_messages() {
+                        Ok(_) => (),
+                        Err(e) => {
+                            println!("Error while handling inbound messages");
+                        }
+                    }
+                },
+                None => ()
+            }
+
             // The rest of the game loop goes here...
             self.retro.run();
             self.canvas.present();
@@ -182,8 +196,14 @@ impl MyEmulator {
                 spf = 1.0 / 60.0;
             }
 
-            let new_data = SyncedPokemonRedBlue::copy_from_emu(self);
-            std::mem::replace(&mut self.synced_pokemonrb, new_data);
+            match &mut self.synced_game {
+                Some(g) => {
+                    g.update_state();
+                    g.send_state_messages();
+                },
+                None => ()
+            }
+            //println!("{}", self.synced_pokemonrb);
 
             Duration::from_secs_f64(spf)
                 .checked_sub(frame_begin.elapsed())
@@ -191,17 +211,31 @@ impl MyEmulator {
         }
     }
 
-    pub fn load_game(&self, rom: impl AsRef<Path>) {
+    pub fn load_game(&mut self, rom: impl AsRef<Path>) {
         let path = rom.as_ref();
         let mut data = None;
         let mut v = Vec::new();
-        if !self.sys_info.need_fullpath {
-            if let Ok(mut f) = std::fs::File::open(path) {
-                if f.read_to_end(&mut v).is_ok() {
-                    data = Some(v.as_ref());
-                }
+
+        if let Ok(mut f) = std::fs::File::open(path) {
+            if f.read_to_end(&mut v).is_ok() {
+                data = Some(v.as_ref());
+
+                let library_name = unsafe { CStr::from_ptr(self.sys_info.library_name) }.to_string_lossy();
+
+                self.game_info = match get_game_info(library_name.as_ref(), v.as_ref()) {
+                    Ok(game_info) => Some(game_info),
+                    Err(e) => {
+                        println!("Couldn't get game metadata: {:?}", e);
+                        None
+                    }
+                };
             }
         }
+
+        if self.sys_info.need_fullpath { // this core will load the rom itself, so don't pass it data
+            data = None
+        }
+
         self.retro
             .load_game(Some(path), data, None)
             .unwrap();
@@ -279,26 +313,6 @@ impl MyEmulator {
     }
 
 
-    fn find_bank(&self, offset: usize, length: usize, bank_switch: usize) -> Option<*const std::ffi::c_void> {
-        if self.memory_map.len() == 0 {
-            return None;
-        }
-
-        for item in self.memory_map.iter() {
-            if (item.start <= offset) && (offset < item.end) {
-                if offset + length > item.end {
-                    println!("({:x}, {:x}) overruns ({:x}, {:x}) memory bank.", offset, length, item.start, item.end);
-                    return None;
-                }
-
-                let bank_size = item.end - item.start;
-                let relative_offset = isize::try_from(offset - item.start + (bank_size * bank_switch)).unwrap();
-                return unsafe { Some(item.pointer.offset(relative_offset)) }
-            }
-        }
-        println!("({:x}, {:x}) address range not found in any memory map region.", offset, length);
-        None
-    }
 }
 
 impl Drop for MyEmulator {
@@ -435,50 +449,12 @@ impl retro::wrapper::Handler for MyEmulator {
         eprint!("[{:?}] {}", level, msg);
     }
 
-    fn set_memory_maps(&mut self, memory_map: MemoryMap) -> bool {
-        let mut descs: Vec<MyMemoryMap> = Vec::new();
-        let num_descriptors = isize::try_from(memory_map.num_descriptors).unwrap();
-        for i in 0..num_descriptors {
-            let desc = unsafe { &*memory_map.descriptors.offset(i) };
-            let mut length = desc.len;
-
-            if desc.select > 0 { // FIXME: hack for oversized SRAM eating addr space
-                length = (!desc.select + 1) & 0xffffffff;
-                println!("truncating memory region {:x} from size {:x} to {:x} banks of size {:x}", desc.start, desc.len, desc.len/length, length)
-            }
-
-            descs.push(MyMemoryMap {
-                start: desc.start,
-                end: desc.start + length,
-                pointer: desc.ptr,
-            })
-        }
-
-        self.memory_map = descs;
-
+    fn set_memory_maps(&mut self, ffi_memory_map: MemoryMap) -> bool {
+        self.memory_map = Some(LibRetroMemoryMap::create(&ffi_memory_map));
         true
     }
 }
 
-impl MemoryRw for MyEmulator {
-    fn peek_region<T>(&self, offset: usize, bank_switch: usize) -> Option<&T> {
-        let length = std::mem::size_of::<T>();
-        match self.find_bank(offset, length, bank_switch) {
-            Some(ptr) => Some(unsafe { &*(ptr as *mut T) }),
-            None => None
-        }
-    }
-
-    fn poke_region<T>(&mut self, offset: usize, data: T, bank_switch: usize) {
-        
-    }
-}
-
-struct MyMemoryMap {
-    start: usize,
-    end: usize,
-    pointer: *const std::ffi::c_void,
-}
 
 struct MySdlAudio {
     audio_spec: AudioSpec,
@@ -497,34 +473,6 @@ impl AudioCallback for MySdlAudio {
     }
 }
 
-pub fn main() -> failure::Fallible<()> {
-    let opt: Opt = Opt::from_args();
-    let mut emu = MyEmulator::new(&opt.core, &opt.system);
-    emu.load_game(&opt.rom);
-    match (&opt.state) {
-        Some(s) => emu.load_state(s),
-        None => ()
-    }
-    emu.run();
-
-    Ok(())
-}
-
-#[derive(StructOpt)]
-struct Opt {
-    /// Core module to use.
-    #[structopt(short, long, parse(from_os_str))]
-    core: PathBuf,
-    /// ROM to load using the core.
-    #[structopt(short, long, parse(from_os_str))]
-    rom: PathBuf,
-    /// System directory, often containing BIOS files
-    #[structopt(short, long, parse(from_os_str))]
-    system: Option<PathBuf>,
-    /// Serialized game state to load
-    #[structopt(long, parse(from_os_str))]
-    state: Option<PathBuf>,
-}
 
 fn button_map(retro_button: &JoypadButton) -> Option<Button> {
     match retro_button {
@@ -576,4 +524,4 @@ fn axis_map(index: &InputIndex, axis: &AnalogAxis) -> Axis {
         (InputIndex::Right, AnalogAxis::X) => Axis::RightX,
         (InputIndex::Right, AnalogAxis::Y) => Axis::RightY,
     }
-}
+}
\ No newline at end of file
diff --git a/src/emulator/libretro_memory_map.rs b/src/emulator/libretro_memory_map.rs
new file mode 100644
index 0000000..6383740
--- /dev/null
+++ b/src/emulator/libretro_memory_map.rs
@@ -0,0 +1,66 @@
+use std::convert::TryFrom;
+use ferretro::retro::ffi::{MemoryMap};
+
+pub struct LibRetroMemoryMap {
+    regions: Vec<LibRetroMemoryRegion>,
+}
+
+impl LibRetroMemoryMap {
+    pub fn get_slice_from_region(&self, offset: usize, length: usize, bank_switch: usize) -> Option<&'static mut [u8]> {
+        match self.find_bank(offset, length, bank_switch) {
+            Some(ptr) => Some(unsafe { std::slice::from_raw_parts_mut(ptr as *mut u8, length) }),
+            None => None
+        }
+    }
+
+    fn find_bank(&self, offset: usize, length: usize, bank_switch: usize) -> Option<*const std::ffi::c_void> {
+        if self.regions.len() == 0 {
+            return None;
+        }
+
+        for item in self.regions.iter() {
+            if (item.start <= offset) && (offset < item.end) {
+                if offset + length > item.end {
+                    println!("({:x}, {:x}) overruns ({:x}, {:x}) memory bank.", offset, length, item.start, item.end);
+                    return None;
+                }
+
+                let bank_size = item.end - item.start;
+                let relative_offset = isize::try_from(offset - item.start + (bank_size * bank_switch)).unwrap();
+                return unsafe { Some(item.pointer.offset(relative_offset)) }
+            }
+        }
+        println!("({:x}, {:x}) address range not found in any memory map region.", offset, length);
+        None
+    }
+
+    pub fn create(memory_map: &MemoryMap) -> Self {
+        let mut regions: Vec<LibRetroMemoryRegion> = Vec::new();
+        let num_descriptors = isize::try_from(memory_map.num_descriptors).unwrap();
+        for i in 0..num_descriptors {
+            let region = unsafe { &*memory_map.descriptors.offset(i) };
+            let mut length = region.len;
+
+            if region.select > 0 { // FIXME: hack for oversized SRAM eating addr space
+                length = (!region.select + 1) & 0xffffffff;
+                println!("truncating memory region {:x} from size {:x} to {:x} banks of size {:x}", region.start, region.len, region.len/length, length)
+            }
+
+            regions.push(LibRetroMemoryRegion {
+                start: region.start,
+                end: region.start + length,
+                pointer: region.ptr,
+            })
+        }
+
+        LibRetroMemoryMap {
+            regions: regions
+        }
+    }
+}
+
+struct LibRetroMemoryRegion {
+    start: usize,
+    end: usize,
+    pointer: *const std::ffi::c_void,
+}
\ No newline at end of file
diff --git a/src/emulator/metadata_reader.rs b/src/emulator/metadata_reader.rs
new file mode 100644
index 0000000..627241a
--- /dev/null
+++ b/src/emulator/metadata_reader.rs
@@ -0,0 +1,47 @@
+use ascii::AsAsciiStr;
+
+pub enum GamePlatform {
+    GameBoyColor,
+    SuperNintendo,
+    Genesis
+}
+
+pub struct GameInfo {
+    pub platform: GamePlatform,
+    pub core_name: String,
+    pub game_name: String,
+}
+
+fn core_to_platform(core_name: &str) -> GamePlatform {
+    match core_name.to_lowercase().as_str() {
+        "gambatte" => GamePlatform::GameBoyColor,
+        "bsnes" => GamePlatform::SuperNintendo,
+        "genesis plus gx" => GamePlatform::Genesis,
+        "higan (super famicom accuracy)" => GamePlatform::SuperNintendo,
+        _ => panic!(format!("unknown core {}", core_name))
+    }
+}
+
+pub fn get_game_info(core_name: &str, data: &[u8]) -> Result<GameInfo, failure::Error> {
+    let platform = core_to_platform(&core_name);
+
+    let game_name = match &platform {
+        GamePlatform::GameBoyColor => data.slice_ascii(0x134..0x143)?.to_string()
+            .trim_end_matches("\0").to_string(), // remove nulls at end
+
+        GamePlatform::SuperNintendo => data.slice_ascii(0x7fc0..0x7fd5)?.to_string()
+            .trim_end_matches("\0").to_string(), // remove nulls at end
+
+        GamePlatform::Genesis => data.slice_ascii(0x120..0x150)?.to_string()
+            .split(" ")
+            .filter(|w| w.len() > 0)
+            .collect::<Vec<&str>>()
+            .join(" "), // remove duplicate spaces
+    };
+
+    Ok(GameInfo {
+        platform,
+        core_name: String::from(core_name),
+        game_name,
+    })
+}
\ No newline at end of file
diff --git a/src/emulator/mod.rs b/src/emulator/mod.rs
new file mode 100644
index 0000000..f25abfe
--- /dev/null
+++ b/src/emulator/mod.rs
@@ -0,0 +1,3 @@
+pub mod emulator;
+pub mod libretro_memory_map;
+pub mod metadata_reader;
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 9301560..9e71475 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,4 +4,5 @@ extern crate num;
 #[macro_use]
 extern crate num_derive;
 
-pub mod sync;
\ No newline at end of file
+pub mod sync;
+pub mod emulator;
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..d5dba4f
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,76 @@
+#[macro_use] extern crate failure;
+extern crate crossbeam_channel;
+extern crate ferretro;
+extern crate sdl2;
+extern crate serde;
+extern crate serde_bytes;
+extern crate ascii;
+
+use structopt::StructOpt;
+use std::path::{Path, PathBuf};
+
+use ferretro_synced::emulator::emulator::MyEmulator;
+use ferretro_synced::emulator::libretro_memory_map::LibRetroMemoryMap;
+use ferretro_synced::sync::game::{SyncableGame, KnownGames, read_game_name, create_game};
+use ferretro_synced::sync::comms::CommunicationSettings;
+
+pub fn main() -> failure::Fallible<()> {
+    let opt: Opt = Opt::from_args();
+    let mut emu = MyEmulator::new(&opt.core, &opt.system);
+    emu.load_game(&opt.rom);
+
+    // memory map should be ready after init & loading game.
+    //let memory_map = emu.memory_map.as_ref().expect("Memory map was not set by emulator core, cannot continue.");
+
+    match (&opt.state) {
+        Some(s) => emu.load_state(s),
+        None => ()
+    }
+
+    let comms_settings = CommunicationSettings {
+        connection: "ws://127.0.0.1:8765".to_string()
+    };
+
+
+    if let Err(e) = attempt_to_start_sync(&mut emu, comms_settings) {
+        println!("Error trying to start sync: {:?}", e);
+    }
+
+    emu.run();
+
+    Ok(())
+}
+
+fn attempt_to_start_sync(emu: &mut MyEmulator, comms_settings: CommunicationSettings) -> Result<(), failure::Error> {
+    match &emu.game_info {
+        Some(game_info) => match read_game_name(&game_info.game_name) {
+            Some(which_game) => match &emu.memory_map {
+                Some(memory_map) => {
+                    let synced_game = create_game(which_game, comms_settings, memory_map);
+                    emu.begin_sync(synced_game);
+                    Ok(())
+                },
+                None => Err(format_err!("Memory map has not been set"))
+            },
+            None => Err(format_err!("Unrecognized game {}", game_info.game_name))
+        },
+        None => Err(format_err!("Couldn't get game metadata"))
+    }
+
+}
+
+#[derive(StructOpt)]
+struct Opt {
+    /// Core module to use.
+    #[structopt(short, long, parse(from_os_str))]
+    core: PathBuf,
+    /// ROM to load using the core.
+    #[structopt(short, long, parse(from_os_str))]
+    rom: PathBuf,
+    /// System directory, often containing BIOS files
+    #[structopt(short, long, parse(from_os_str))]
+    system: Option<PathBuf>,
+    /// Serialized game state to load
+    #[structopt(long, parse(from_os_str))]
+    state: Option<PathBuf>,
+}
diff --git a/src/sync/comms.rs b/src/sync/comms.rs
new file mode 100644
index 0000000..df9a548
--- /dev/null
+++ b/src/sync/comms.rs
@@ -0,0 +1,140 @@
+use std::path::{Path, PathBuf};
+use std::sync::mpsc::{Sender, Receiver, TryRecvError};
+use std::sync::mpsc;
+use std::thread;
+use std::thread::JoinHandle;
+use serde::Serialize;
+use serde::de::DeserializeOwned;
+use serde_json;
+
+use websocket::client::ClientBuilder;
+use websocket::receiver::Reader;
+use websocket::sender::Writer;
+use websocket::{Message, OwnedMessage};
+
+const CONNECTION: &'static str = "ws://127.0.0.1:8765";
+pub struct Communication<T> {
+    rx: Receiver<T>,
+    tx: Sender<OwnedMessage>,
+    inbound_thread: JoinHandle<Result<(), failure::Error>>,
+    outbound_thread: JoinHandle<Result<(), failure::Error>>,
+}
+
+pub struct CommunicationSettings {
+    pub connection: String
+}
+
+impl<T> Communication<T> where T: std::marker::Send, T: Serialize, T: DeserializeOwned, T: 'static {
+    pub fn new(settings: CommunicationSettings) -> Self {
+        let (tx, from_main): (Sender<OwnedMessage>, Receiver<OwnedMessage>) = mpsc::channel();
+        let (to_main, rx): (Sender<T>, Receiver<T>) = mpsc::channel();
+
+        // transmitter for ping and close messages
+        let tx_1 = tx.clone();
+
+        let ws_client = ClientBuilder::new(settings.connection.as_str())
+            .unwrap()
+            .add_protocol("rust-websocket")
+            .connect_insecure()
+            .unwrap();
+
+        let (mut ws_receiver, mut ws_sender) = ws_client.split().unwrap();
+
+        let outbound = thread::spawn(move || -> Result<(), failure::Error> {
+            let mut from_main = from_main;
+            let mut ws_sender = ws_sender;
+            let mut flush = || -> Result<(), failure::Error> {
+                let msg = from_main.recv()?;
+                println!("sending a message {:?}", &msg);
+                ws_sender.send_message(&msg)?;
+                Ok(())
+            };
+
+            loop {
+                 match flush() {
+                    Ok(_) => (),
+                    Err(e) => {
+                        println!("Error in outbound thread: {}", e);
+                        return Err(e)
+                    }
+                }
+            }
+        });
+
+        let inbound = thread::spawn(move || -> Result<(), failure::Error> {
+            let mut to_main = to_main;
+            let mut ws_receiver = ws_receiver;
+            let mut tx_1 = tx_1;
+
+            let mut flush = || -> Result<(), failure::Error> {
+                let msg = ws_receiver.recv_message()?;
+                match msg {
+                    OwnedMessage::Text(text) => match serde_json::from_str(&text) {
+                        Ok(m) => {
+                            println!("receiving a message {}", &text);
+                            to_main.send(m); // todo print an error
+                            Ok(())
+                        }
+                        Err(e) => Err(failure::err_msg(format!("deserialization error: {:?}", e)))
+                    },
+                    OwnedMessage::Binary(_) => Err(failure::err_msg("binary message not implemented")),
+                    OwnedMessage::Close(_) => {
+                        tx_1.send(OwnedMessage::Close(None));
+                        Err(failure::err_msg("Connection closed by request."))
+                    }
+                    OwnedMessage::Ping(data) => {
+                        tx_1.send(OwnedMessage::Pong(data));
+                        // todo print an error
+                        Ok(())
+                    },
+                    OwnedMessage::Pong(_) => {
+                        println!("received pong");
+                        Ok(())
+                    }
+                }
+            };
+
+            loop {
+                match flush() {
+                    Ok(_) => (),
+                    Err(e) => {
+                        println!("Error in inbound thread: {}", e);
+                        return Err(e)
+                    }
+                }
+                /*
+                match Communication::<T>::handle_inbound(to_main) {
+                    Ok(_) => (),
+                    Err(e) => return Err(e)
+                }
+                */
+            }
+        });
+
+        Communication {
+            tx: tx,
+            rx: rx,
+            inbound_thread: inbound,
+            outbound_thread: outbound,
+        }
+    }
+
+    pub fn send(&mut self, msg: T) -> Result<(), failure::Error> {
+        let msg_serialized = serde_json::to_string(&msg)?;
+        self.tx.send(OwnedMessage::Text(msg_serialized))?;
+        Ok(())
+    }
+
+    pub fn receive_if_any(&mut self) ->  Option<T> {
+        match self.rx.try_recv() {
+            Err(e) => match e {
+                TryRecvError::Empty => None,
+                TryRecvError::Disconnected => {
+                    println!("Disconnected when trying to receive.");
+                    None
+                }
+            }
+            Ok(msg) => Some(msg)
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/sync/game.rs b/src/sync/game.rs
new file mode 100644
index 0000000..3f5bd0b
--- /dev/null
+++ b/src/sync/game.rs
@@ -0,0 +1,33 @@
+use crate::sync::pokemon_rb::SyncedPokemonRedBlue;
+use crate::sync::comms::CommunicationSettings;
+use crate::emulator::libretro_memory_map::LibRetroMemoryMap;
+
+pub trait SyncableGame {
+    // Update internal state based on tracked memory and the emulator
+    fn update_state(&mut self);
+
+    // Check for messages and handle them
+    fn handle_inbound_messages(&mut self) -> Result<(), failure::Error>;
+
+    // Check for messages and handle them
+    fn send_state_messages(&mut self) -> Result<(), failure::Error>;
+}
+
+pub enum KnownGames {
+    PokemonRedBlue,
+}
+
+pub fn read_game_name(name: &str) -> Option<KnownGames> {
+    match name {
+        "POKEMON BLUE" => Some(KnownGames::PokemonRedBlue),
+        _ => None
+    }
+}
+
+
+pub fn create_game(which_game: KnownGames, comms_settings: CommunicationSettings, memory_map: &LibRetroMemoryMap) -> Box<dyn SyncableGame> {
+    match which_game {
+        KnownGames::PokemonRedBlue => Box::from(SyncedPokemonRedBlue::create(comms_settings, memory_map))
+    }
+
+}
\ No newline at end of file
diff --git a/src/sync/memory_rw.rs b/src/sync/memory_rw.rs
deleted file mode 100644
index 52b83ab..0000000
--- a/src/sync/memory_rw.rs
+++ /dev/null
@@ -1,4 +0,0 @@
-pub trait MemoryRw {
-    fn peek_region<T>(&self, offset: usize, bank_switch: usize) -> Option<&T>;
-    fn poke_region<T>(&mut self, offset: usize, data: T, bank_switch: usize);
-}
\ No newline at end of file
diff --git a/src/sync/memory_slice_handle.rs b/src/sync/memory_slice_handle.rs
new file mode 100644
index 0000000..d52cb44
--- /dev/null
+++ b/src/sync/memory_slice_handle.rs
@@ -0,0 +1,91 @@
+use crate::emulator::libretro_memory_map::LibRetroMemoryMap;
+
+pub struct MemorySliceHandle<'a> {
+    pub offset: usize,
+    pub length: usize,
+    pub bank_switch: usize,
+    pub slice: Option<&'a mut [u8]>,
+    pub last_read_value: Option<Vec<u8>>,
+}
+
+impl MemorySliceHandle<'_> {
+    pub fn create(offset: usize, length: usize, bank_switch: usize, memory_map: &LibRetroMemoryMap) -> Self {
+        let slice = memory_map.get_slice_from_region(offset, length, bank_switch);
+
+        MemorySliceHandle {
+            offset: offset,
+            length: length,
+            bank_switch: bank_switch,
+            slice,
+            last_read_value: None
+        }
+    }
+
+    pub fn write_to_slice(&mut self, data: Vec<u8>) -> Result<(), failure::Error> {
+        match &mut self.slice {
+            Some(slice) => {
+                if data.len() != slice.len() {
+                    return Err(failure::err_msg("message size and slice size differ."));
+                }
+
+                // if last_read_value is set, update it as the same time that we write back to the emulator.
+                match &mut self.last_read_value {
+                    None => {
+                        let mut index: usize = 0;
+                        for value in data.into_iter(){
+                            slice[index] = value;
+                            index += 1;
+                        }
+                    },
+                    Some(last_read_value) => {
+                        let mut index: usize = 0;
+                        for value in data.into_iter(){
+                            slice[index] = value;
+                            last_read_value[index] = value;
+                            index += 1;
+                        }
+                    }
+                }
+
+                Ok(())
+            },
+            None => {
+                println!("slice doesn't exist to write to.");
+                Ok(())
+            }
+
+        }
+    }
+
+    pub fn get_copy_if_changed_since_last_read(&mut self) -> Option<Vec<u8>> {
+        match &mut self.slice {
+            None => None,
+            Some(data) => match &mut self.last_read_value {
+                None => {
+                    // last read value isn't allocated yet
+                    let last = data.to_vec();
+                    self.last_read_value = Some(last);
+                    self.last_read_value.clone()
+                },
+                Some(last) => {
+                    let mut index: usize = 0;
+                    let mut any_changes = false;
+
+                    for value in data.into_iter() {
+                        if last[index] != *value {
+                            last[index] = *value;
+                            any_changes = true;
+                        }
+                        index += 1;
+                    }
+
+                    if any_changes {
+                        return Some(last.clone());
+                    }
+                    None
+                }
+            }
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/src/sync/mod.rs b/src/sync/mod.rs
index e0f9ea0..0a57e5f 100644
--- a/src/sync/mod.rs
+++ b/src/sync/mod.rs
@@ -1,2 +1,4 @@
 pub mod pokemon_rb;
-pub mod memory_rw;
\ No newline at end of file
+pub mod comms;
+pub mod memory_slice_handle;
+pub mod game;
\ No newline at end of file
diff --git a/src/sync/pokemon_rb.rs b/src/sync/pokemon_rb.rs
index 9834751..4c97934 100644
--- a/src/sync/pokemon_rb.rs
+++ b/src/sync/pokemon_rb.rs
@@ -1,53 +1,79 @@
 use std::default::Default;
 use std::fmt::Display;
-use crate::sync::memory_rw::MemoryRw;
+use crate::emulator::libretro_memory_map::LibRetroMemoryMap;
+use serde::{Serialize, Deserialize};
 use ferretro::retro::wrapper::LibretroWrapper; // want LibretroWrapper.api : LibretroApi.get_memory()
+use crate::num::ToPrimitive;
+use crate::sync::comms::Communication;
+use crate::sync::comms::CommunicationSettings;
+use crate::sync::memory_slice_handle::MemorySliceHandle;
+use crate::sync::game::SyncableGame;
 
-#[derive(Default)]
 pub struct SyncedPokemonRedBlue {
-    raw: Raw,
+    memory_handles: PokemonRedBlueMemoryHandles<'static>,
     battle_context: BattleContext,
+    comms: Communication<PokemonRedBlueMessage>
 }
 
-struct Raw {
-    active_pokemon_raw: [u8; 0x27],
-    player_and_party: [u8; 0x19e],
-    pokemon_out: u8,
+#[derive(Serialize, Deserialize)]
+pub struct PokemonRedBlueMessage {
+    active_pkmn: Option<Vec<u8>>
+}
+
+impl From<&mut PokemonRedBlueMemoryHandles<'_>> for PokemonRedBlueMessage {
+    fn from(src: &mut PokemonRedBlueMemoryHandles) -> Self {
+        PokemonRedBlueMessage {
+            active_pkmn: src.active_pokemon.get_copy_if_changed_since_last_read()
+        }
+    }
+}
+
+struct PokemonRedBlueMemoryHandles<'a> {
+    active_pokemon: MemorySliceHandle<'a>,
+    player_and_party: MemorySliceHandle<'a>,
+    pokemon_out: MemorySliceHandle<'a>,
 }
 
 struct BattleContext {
     active_pokemon: Pokemon,
-
 }
 
-impl SyncedPokemonRedBlue {
-    pub fn copy_from_emu<T: MemoryRw>(emu: &T) -> SyncedPokemonRedBlue {
-        let raw = Raw {
-            active_pokemon_raw: *emu.peek_region(0xd009, 0).unwrap_or_else(|| &[0; 0x27]),
-            player_and_party: *emu.peek_region(0xd158, 0).unwrap_or_else(|| &[0; 0x19e]),
-            pokemon_out: *emu.peek_region(0xcc2f, 0).unwrap_or(&0),
-        };
-
+impl SyncableGame for SyncedPokemonRedBlue {
+    fn update_state(&mut self) {
         let battle_context = BattleContext {
-            active_pokemon: num::FromPrimitive::from_u8(raw.active_pokemon_raw[0xB]).unwrap_or(Pokemon::Unknown)
+            active_pokemon: match &self.memory_handles.active_pokemon.slice {
+                Some(d) => num::FromPrimitive::from_u8(d[0xB]).unwrap_or(Pokemon::Unknown),
+                None => Pokemon::Unknown
+            }
         };
 
-        let result = SyncedPokemonRedBlue {
-            raw: raw,
-            battle_context: battle_context,
-        };
+        self.battle_context = battle_context;
+    }
 
-        println!("{}", result);
-        result
+    fn send_state_messages(&mut self) -> Result<(), failure::Error>{
+        let message: PokemonRedBlueMessage = (&mut self.memory_handles).into();
+        if !message.active_pkmn.is_none() {
+            self.comms.send(message)
+        }
+        else {
+            Ok(())
+        }
+    }
+
+    fn handle_inbound_messages(&mut self) -> Result<(), failure::Error>{
+        match self.comms.receive_if_any() {
+            Some(msg) => self.handle_message(msg),
+            None => Ok(())
+        }
     }
 }
 
-impl Default for Raw {
-    fn default() -> Self {
-        Raw {
-            active_pokemon_raw: [0; 0x27],
-            player_and_party: [0; 0x19e],
-            pokemon_out: 0,
+impl PokemonRedBlueMemoryHandles<'_> {
+    pub fn create(memory_map: &LibRetroMemoryMap) -> Self {
+        PokemonRedBlueMemoryHandles {
+            active_pokemon: MemorySliceHandle::create(0xd009, 0x27, 0, memory_map),
+            player_and_party: MemorySliceHandle::create(0xd158, 0x19e, 0, memory_map),
+            pokemon_out: MemorySliceHandle::create(0xcc2f, 0x1, 0, memory_map),
         }
     }
 }
@@ -62,10 +88,31 @@ impl Default for BattleContext {
 
 impl Display for SyncedPokemonRedBlue {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "active: pk {:?} {:?}", &self.battle_context.active_pokemon, &self.raw.active_pokemon_raw[0xB])
+        write!(f, "active: pk {:?}", &self.battle_context.active_pokemon)
     }
 }
-#[derive(FromPrimitive, Debug)]
+
+impl SyncedPokemonRedBlue {
+    pub fn create(comms_settings: CommunicationSettings, memory_map: &LibRetroMemoryMap) -> Self {
+        SyncedPokemonRedBlue {
+            memory_handles: PokemonRedBlueMemoryHandles::create(memory_map),
+            battle_context: BattleContext::default(),
+            comms: Communication::new(comms_settings),
+        }
+    }
+
+    fn handle_message(&mut self, msg: PokemonRedBlueMessage) -> Result<(), failure::Error> {
+        match msg.active_pkmn {
+            Some(src) => {
+                println!("message contains a new active pokemon. data: {:?}", &src);
+                self.memory_handles.active_pokemon.write_to_slice(src)
+            }
+            None => Ok(())
+        }
+    }
+}
+
+#[derive(FromPrimitive, ToPrimitive, Debug)]
 enum Pokemon {
     Unknown = 0x0,
     Abra = 0x94,
@@ -219,4 +266,44 @@ enum Pokemon {
     Wigglytuff = 0x65,
     Zapdos = 0x4B,
     Zubat = 0x6B,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json;
+
+    fn build_message(em: &MemorySliceHandle) -> PokemonRedBlueMessage {
+        PokemonRedBlueMessage {
+            active_pkmn: match &em.slice {
+                Some(m) => Some(m.to_vec()),
+                None => None
+            }
+        }
+    }
+
+    #[test]
+    fn serde_mem() -> Result<(), String> {
+        let mut data: [u8; 5] = [1, 2, 3, 4, 5];
+        let b: &mut [u8] = &mut data;
+        let slice = MemorySliceHandle {
+            offset: 0,
+            length: 0,
+            bank_switch: 0,
+            slice: Some(b),
+            last_read_value: None
+        };
+
+        let message = build_message(&slice);
+
+        let serialized = serde_json::to_string(&message).unwrap();
+
+        println!("serialized data: {}", serialized);
+
+        let deserialized: PokemonRedBlueMessage = serde_json::from_str(&serialized).unwrap();
+
+        assert_eq!(deserialized.active_pkmn.unwrap()[0], data[0]);
+        Ok(())
+    }
+
 }
\ No newline at end of file