Portal 2 is the sequal to Valve's unexpected 2007 hit Portal. The first portal was originally only available through a Half-Life 2 bundle - but the game got so much attention that it was eventually released as a standalone product in 2008. Portal 2 is a first person puzzle-platform game and was released April of 2011 for the PS3, Xbox 360, PC and MAC. The game is formatted like a first person shooter - however your only weapon - or better yet tool - is a gun the creates portals. It has two triggers - one that shoots out at blue portal and one that shoots out a yellow. If you go through the blue portal you will come out the yellow. A very simple concept that is turned complicated. The game is primarily a single player game but co-op is available through Valve's Network.

Portal 2
Developer(s)	Valve Corporation
Publisher(s)	Valve Corporation
Distributor(s)	Valve Corporation (online) Electronic Arts (retail)
Director(s)	Joshua Weier
Producer(s)	Gabe Newell
Artist(s)	Jeremy Bennett Randy Lundeen (art directors)
Writer(s)	Erik Wolpaw Jay Pinkerton Chet Faliszek
Composer(s)	Mike Morasky Jonathan Coulton ("Want You Gone") The National ("Exile Vilify")
Series	Portal
Engine	Source (Build 4710, 6 October 2011)
Version	2.0.0.1 (24 October 2011)[1]
Platform(s)	Microsoft Windows Mac OS X PlayStation 3 Xbox 360
Release date(s)	Retail NA April 19, 2011 PAL April 21, 2011 Steam (Worldwide) April 19, 2011
Genre(s)	Puzzle-platform game
Mode(s)	Single-player Co-operative
Rating(s)	ESRB: E10+[2] OFLC: PG[3] PEGI: 12[4]
Media/distribution	Optical disc, digital distribution
System requirements Windows Microsoft Windows XP, Vista or 7 Intel Pentium 4 3.0 GHz or 2 GHz dual-core 1 GB RAM (2 GB for Vista and 7) 7.6 GB of free hard disk space DirectX 9.0 graphics card with 128 MB RAM DirectX 9.0c compatible sound card Mac OS X Mac OS X 10.6.7 Intel Core Duo 2.0 GHz 2 GB RAM 7.6 GB of free hard disk space NVIDIA GeForce 8600M, ATI Radeon HD 2400, or Intel HD Graphics 3000