F-Stop, the key mechanic of Valve’s unreleased Portal prequel, has lastly been revealed
Just after Portal 2 was launched, Valve and Geoff Keighley additionally launched The Final Hours of Portal 2, an interactive ebook concerning the making of 2011’s greatest potato-based puzzle game. The most revealing story within the ebook was about how Valve had spent a while making a game that was Portal’s follow-up in title solely....