Uhh wtf? What's happening here? (Portal Reloaded coop in split screen, as I can't find ppl. btw it's so damn confusing, and I've played the whole singleplayer campaign...) : r/Portal
Portal 2 PC Split-Screen Tutorial with Controller + Keyboard, Mouse - YouTube
Portal 2 Patch Tweaks Co-op, Adds Split-Screen Via Remote Play
Co-Optimus - News - How to Play Portal 2 Split Screen on Your PC
How To] Play Portal 2 Split Screen and With 2 PC or PS2 USB Controller Tutorial - YouTube
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 on Steam adds split-screen to co-op mode, Big Picture support - Polygon
Portal 2 PC Splitscreen CO-OP Fun Gameplay - YouTube
Portal 2 PC Split-Screen Co-Op
Portal 2 PC finally gets split-screen co-op | Eurogamer.net
Portal 2 PC - local co-op (splitscreen) gameplay - YouTube
How to Play Splitscreen on Portal 2 - YouTube
Steam Community :: Guide :: How to play Local Co-op with Controller + Keyboard
Portal 2 Gets Split-Screen Support in Big Picture Mode | Tom's Hardware