Microsoft Windows:Steam October 9, 2007PlayStation 3: Microsoft Windows:(retail stand-alone):Rest of WorldApril 11, 2008Xbox Live Arcade: October 22, 2008Mac OS X: May 12, 2010
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| genre = Sci-fi puzzle-platform game
| modes = Single-player
| ratings =
| platforms = Microsoft Windows, Mac OS X, PlayStation 3, Xbox 360
| media = DVD, digital download
| requirements = → See Development section for requirements
| input = Gamepad, keyboard and mouse
}}
Portal is a single-player puzzle-platformer developed by Valve Corporation. The game was released in a bundle package called The Orange Box...