The most effective way to achieve split-screen on PC today is through a specialized tool called Nucleus Co-Op. This is not a traditional .zip file you drop into a game folder; rather, it is a powerful script-based handler that opens multiple instances of the game and aligns them to your screen. It handles the difficult task of tricking the game into recognizing multiple controllers and routing inputs to specific windows.
: Copy the contents of the toolkit zip file into your game's GameData folder. Use the included GUI to configure players and launch sessions. Important Tips star wars battlefront 2 2005 split screen pc mod