The first thing you should do no matter which method you try is go into your SteamSteamAppscommonLeft 4 Deadleft4deadcfg folder and create a new file called TwoPlayerSplitScreencfg Inside this file we are going to put all of the commands to achieve a two local player split screen game where one player uses the mouse and keyboard and the other. It may cause problems Here is the new Mainmenu we created for Left 4 Dead 2.
