Portal 2 Valve · 2011 · Singleplayer, Platformer, Puzzle, First-Person, Dark Humor PC Best price -40%$6.01 historical low $0.99 Compare prices in Official Stores Steam Standard Edition · Steam $9.99BuyCompare prices in Keyshops Gameseal Standard Edition · Steam $6.01BuyAbout Portal 2The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
