Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following.



The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas of the Aperture Science Labs and be reunited with GLaDOS, the occasionally murderous computer companion who guided them through the original game.

All three volumes of the Songs To Test By: Portal 2 soundtrack album by Mike Morasky of Aperture Science Psychoacoustic Laboratories, along with numerous ringtones, are available for free download in mp3 format through Valve's Thinkwithportals website.The physics-based puzzle-platformer blends synthetic-sounding compositions on electronic piano, oddly modulated chip music and unusual rhythm patterns to reflect the theme of computers run amok. End credits break-up song "Want You Gone," the spiritual successor to "Still Alive," is written by Jonathan Coulton and performed by GLaDOS voice actor Ellen McLain. "Cara Mia Addio," depicting a chorus of singing turrets, capitalizes on McLain's background as an opera singer.is available for Windows, Mac and Linux, along with Xbox 360 (with Xbox One backward compatibility) and PlayStation 3. The four-hour, 77-track soundtrack is streaming on Amazon Music, Apple Music and Spotify.From the Steam product page: