Nucles Co-Op is a tool for Windows that allows split-screen play on many games that do not initially support it.

Currently Supported Games: (only games I've personally tested)

• Borderlands 2
• Borderlands: The Pre Sequel

So close but not there yet:

• Borderlands Working: All instances open correctly using SmartSteamEmu, can even join LAN games. Issue: Can't control 2 screens at once. Need to find a way to fake focus (-AlwaysFocus doesn't work on this game)
• Saints Row 3 Working: All instances open correctly using SmartSteamEmu, can control all instances freely Issue: Can't find the game on LAN. If from the Shift + Tab menu, the game says the session is no longer available.

Working on:

• Call of Duty: Black Ops 2 Zombies
• Gears of War

Next on the List:

• Left 4 Dead 1
• Left 4 Dead 2
• Portal 2
• Call of Duty: Black Ops
• Call of Duty: Modern Warfare 2
• Saints Row 3
• Saints Row 4
• Team Fortress 2 (support for 64 players on 1 machine FTW)
• Unlimited Power mode (multiple keyboards + mouses + gamepads)

Games I want to add but I don't own:

• Call of Duty: World At War
• Call of Duty: Modern Warfare 3

A ton of games will be supported thank for the godsend tool called SmartSteamEmu, developed by syahmixp, grabbed from http://cs.rin.ru/forum/viewtopic.php?f=10&t=62935 Awesome application that emulates Steam and even enables LAN connections, so we can play everything easily!