Portal is a 2007 first-person puzzle-platform video game developed by Valve Corporation, released in a bundle package called The Orange Box for Microsoft Windows via its digital distribution service Steam and Xbox 360 on October 9, 2007, the PlayStation 3 on December 11, 2007, OS X on the Mac-compatible Steam platform on May 12, 2010, a Linux version on Steam as a beta on May 2, 2013 and released on June 24, 2013, and for Android as a port for the Nvidia Shield on May 12, 2014.
The game consists primarily of a series of puzzles that must be solved by teleporting the player's character and simple...