Portal is a single-player first-person action/puzzle video game developed by Valve Corporation. The game was released in the bundle package The Orange Box for Microsoft Windows and Xbox 360 on October 9, 2007, and for the PlayStation 3 on December 11, 2007. The Windows version of the game is also available for download separately through Valve's content delivery system, Steam and was released as a standalone retail product on April 9, 2008. The game consists primarily of a series of puzzles that must be solved by teleporting the player's character and other simple objects using the Aperture Science Handheld Portal Device (dubbed the "Portal Gun" or "ASHPD"), a unit that can create an inter-spatial portal between flat planes. The player character is challenged by an AI named "GLaDOS" to complete each puzzle in the "Aperture Science Computer-Aided Enrichment Center" using the Portal Gun with the promise of receiving cake when all the puzzles are completed.
This game does not support VIP Servers.