After separating from Wheatley and completing a series of tests revisited from Portal, Chell reunites with Wheatley and head to what they believe will be escape. With a desire to flee the crumbling facility, Wheatley and Chell begin their quest to escape Aperture Science to return to the real world. Portal 2 takes place an indeterminate amount of time, somewhere between 50 and 50,000 years, after the events of Portal, which saw Chell destroying the sentient computer GLaDOS, and landing outside the facility, only to be dragged back inside of Aperture Science where she was ultimately placed in a Relaxation Chamber by Doug Rattmann for the indefinite future.Īfter considerable time has passed, Wheatley, a personality core, that has helped to maintain Aperture Science during the absence of GLaDOS arrives at the room of the awakening Chell.

Retail release in North America started on Apand later, Europe and Australia on April 21, 2011. Portal 2 was released Apon the Steam platform. It features a single-player story set after the events of Portal's story and a brand-new Co-op game mode, featuring additional test chambers designed specifically for Co-operative play.

Portal 2 is the sequel to the award winning and hugely successful Portal developed by Valve Corporation. ATI Radeon HD 2400 / NVIDIA GeForce 8600M / Intel HD Graphics 3000 or higher.DirectX 9 graphics card with 128 MB RAM.1 GB of RAM on Windows XP or Windows 7 (2 GB on Windows Vista).3.0 GHz Intel Pentium 4 or 2.0 GHz Dual Core Processor.

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