

Valve announced Portal 2 in March 2010, and promoted it with alternate reality games including the Potato Sack, a collaboration with several independent game developers. Jonathan Coulton and the National produced songs for the game. In the new cooperative mode, players solve puzzles together as robots Atlas and P-Body (both voiced by Dee Bradley Baker). In the single-player campaign, players control Chell, who navigates the dilapidated Aperture Science Enrichment Center during its reconstruction by the supercomputer GLaDOS (Ellen McLain) new characters include robot Wheatley (Stephen Merchant) and Aperture founder Cave Johnson (J. Portal 2 adds features including tractor beams, lasers, light bridges, and paint-like gels that alter player movement or allow portals to be placed on any surface. Like the original Portal (2007), players solve puzzles by placing portals and teleporting between them. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts. It was released in April 2011 for Windows, OS X, Linux, PlayStation 3, and Xbox 360.

The portal gun can create two distinct portal ends, orange and blue.

In Portal, the player controls the protagonist, Chell, from a first-person perspective as she is challenged to navigate through a series of rooms using the Aperture Science Handheld Portal Device, or portal gun, under the watchful supervision of the artificial intelligence GLaDOS. Portal is a puzzle-platform video game developed and published by Valve Corporation. Download Portal for free on PC – this page will show you how to download and install the full version of Portal on PC.
