http://www.gog.com/game/divinity_orig...
Divinity Original Sin Enhanced Edition features 1000's of enhancements including split-screen cooperative play and Source Hunter DLC.
Everything's more fun with a friend and Original Sin is no different! Drop-in, drop-out multiplayer lets you play online or in your living room, with local split-screen co-op and a controller-friendly UI. Adventure together or explore completely different places, right from the same sofa!