GoKawiilFans assemble playable build of Valve's canceled Portal prequel F-Stop from leaks
Community members have combined leaked source code, map data and assets into a playable, if incomplete, version of F-Stop, Valve's scrapped Portal prequel. The build stems from an August leak of over 12TB of Steam data plus a later leak of source code and maps shared on the Valve Cut Content Discord. The resulting version lacks textures and dialogue but runs stably enough to demonstrate the game's camera mechanic for capturing and repositioning objects.