Portal Knights - Vertical split screen is being added to Portal Knights as part of Update v 1.1, coming soon to both PC and console! We know this is a popular request,
Portal 2 Patch Tweaks Co-op, Adds Split-Screen Via Remote Play
Comunitate Steam :: Ghid :: How to play Local Co-op with Controller + Keyboard
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Amazon.com: Portal 2 - Xbox 360 : Video Games
Portal 2: Pretty Much Every PS3 Question Answered (And That Cake Thing, Too) – PlayStation.Blog
Amazon.com: Portal 2 - Xbox 360 : Video Games
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