Valve’s Cancelled Portal Prequel F-Stop Has Leaked - Kotaku

Three separate Valve leaks have been combined a fully playable version of the cancelled 2007 game F-Stop

F-Stop, Valves cancelled 2007 Portal prequel, has leaked onlineand yes, its fully playable. If youve heard of F-Stop, you dont need me to tell you why this is a huge deal. But if you havent, then you…