diff --git a/.gitignore b/.gitignore
index bd9865a..2322d3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 tmp/*
-node_modules/*
\ No newline at end of file
+node_modules/*
+*.bak
diff --git a/client.js b/client.js
index 6f3a2e9..03c645b 100644
--- a/client.js
+++ b/client.js
@@ -10,6 +10,12 @@ const __messengerjs__ = {
 __messengerjs__.fade = document.createElement("div");
 __messengerjs__.fade.style.cssText = "position: absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.75);color:white;text-align:center;font-family:sans-serif;";
 __messengerjs__.fade.textContent = "connecting to WebSocket server...";
+__messengerjs__.callIfExists = function(fnName) {
+	// THIS function exists because some of the events we call may not exist on the client... why?
+	if(typeof window[fnName] === "function") {
+		window[fnName]();
+	}
+}
 
 const beforeUnloadHandler = function(ev) {
 	Channel_OnAppClose();
@@ -84,8 +90,8 @@ window.external.Channel = {"Data": "", "SendData": null, "Initialize": null, "Er
 // things may want Channel.IM: string and Channel.FileInfo: object {Path: string, Size: number, Progress: number<0-100>, Incoming: bool, Status: num<0-3>}
 window.external.Channel.SendData = function(d) {channelSocket.send(d)}; // this is dumb but trying to redirect this gives you TypeError's
 window.external.Channel.Initialize = function() {
-	// no idea we're already pretty initalized by the time most things call this
-	Channel_OnTypeChanged(); // make client check if its even connected still
+	// no idea we're already pretty initalized by the time most things call 
+	__messengerjs__.callIfExists("Channel_OnTypeChanged"); // make client check if its even connected still
 };
 Object.defineProperty(window.external.Channel, "Type", {
 	get: function Type() {
@@ -165,7 +171,7 @@ channelSocket.onmessage = function(event) {
 							__messengerjs__.fade.textContent = "the channel server was closed. please try again later.";
 							__messengerjs__.fade.style.display = "block";
 							channelSocket.close(1000, "server shutdown acknoledged.");
-							Channel_OnTypeChanged();
+							__messengerjs__.callIfExists("Channel_OnTypeChanged");
 							Channel_OnRemoteAppClosed(); // they're gone
 							Channel_OnAppClose(); // we're gone too
 							break;
@@ -174,15 +180,15 @@ channelSocket.onmessage = function(event) {
 							console.warn("channel was full, generating new room");
 							__messengerjs__.sessionID = Math.random().toString(36).split('.')[1].substring(0,8);
 							history.pushState(null, "", `#channel=${__messengerjs__.sessionID}`);
-							channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID])));
+							channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID, window.GameCode])));
 							break;
 						}
 						default: {
 							__messengerjs__.fade.textContent = "server error:" + args[1] + "code (" + args[2] + ")";
 							__messengerjs__.fade.style.display = "block";
 							channelSocket.close(1000, "server sent non-zero error");
-							Channel_OnTypeChanged();
-							Channel_OnDataError(); // this may just attempt to retry to send the failed data... when we're already closed;
+							__messengerjs__.callIfExists("Channel_OnTypeChanged");
+							__messengerjs__.callIfExists("Channel_OnDataError"); // this may just attempt to retry to send the failed data... when we're already closed;
 						}
 					}
 					break;
@@ -209,7 +215,7 @@ channelSocket.onmessage = function(event) {
 						__messengerjs__.onloadfunction(__messengerjs__.onloadargs);
 					}
 					Channel_OnRemoteAppLoaded();
-					Channel_OnTypeChanged();
+					__messengerjs__.callIfExists("Channel_OnTypeChanged");
 					break;
 				}
 				case "remuser": {
@@ -240,18 +246,18 @@ channelSocket.onerror = function(ev) {
 	Channel_OnDataError();
 }
 channelSocket.onclose = function() {
-	Channel_OnTypeChanged();
+	__messengerjs__.callIfExists("Channel_OnTypeChanged");
 }
 
 function createWSEventsNowThatImReady() {
 	if(channelSocket.readyState === 1) {
 		// if we're already there
 		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["rename"])));
-		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID])));
+		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID, window.GameCode])));
 	}
 	channelSocket.onopen = function() {
 		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["rename"])));
-		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID])));
+		channelSocket.send(new TextEncoder("utf8").encode(EncodeCommandString(["connect", __messengerjs__.sessionID, window.GameCode])));
 	}
 }
 /** pure evil **/
diff --git a/server.js b/server.js
index fba9ac5..498948e 100644
--- a/server.js
+++ b/server.js
@@ -87,7 +87,7 @@ const MessageParser = function(webSocket, message, isBinary) {
 					break;
 				}
 				case "connect": {
-					if(args.length <= 1) {
+					if(args.length <= 2) {
 						webSocket.send(EncodeCommandString(["error", "need more arguments", 768]), true);
 						break;
 					}
@@ -105,8 +105,14 @@ const MessageParser = function(webSocket, message, isBinary) {
 					if(ChannelStorage.has(getChannelId) === false) {
 						// make the channel right then and there
 						console.log(`creating #${getChannelId} for (${webSocket.getUserData().uid})`);
-						ChannelStorage.set(getChannelId, {"owner": webSocket.getUserData().uid});
+						ChannelStorage.set(getChannelId, {"owner": webSocket.getUserData().uid, "fourCC": args[2]});
 					};
+					if(ChannelStorage.get(getChannelId).fourCC !== args[2]) {
+						// if the fourCC is not the same as the channel, error as such
+						webSocket.send(EncodeCommandString(["error", `data is incompatible! (You: ${args[2]}, Remote: ${ChannelStorage.get(getChannelId).fourCC}.`, 256]), true);
+						break;
+						
+					}
 					if(webSocket.isSubscribed(`channels/${getChannelId}`) === true) {
 						// already in this channel
 						webSocket.send(EncodeCommandString(["error", "already in this channel", 517]), true);