Now Includes - Free 'Peer Review' Update

In Peer Review, you and a friend will continue the story of loyal bots P-Body and Atlas as you puzzle your way through a mysterious new co-op test track and once again match wits with GLaDOS. The update also features a single player and co-op Challenge Mode, and leaderboards to compare Challenge Mode scores with friends and the Portal community.

Steam Trading

About the Game

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.

The game’s two-player cooperative mode features its own entirely separate campaign with a unique story, test chambers, and two new player characters. This new mode forces players to reconsider everything they thought they knew about portals. Success will require them to not just act cooperatively, but to think cooperatively.

Product Features

• Extensive single player: Featuring next generation gameplay and a wildly-engrossing story.
• Complete two-person co-op: Multiplayer game featuring its own dedicated story, characters, and gameplay.
• Advanced physics: Allows for the creation of a whole new range of interesting challenges, producing a much larger but not harder game.
• Original music.
• Massive sequel: The original Portal was named 2007's Game of the Year by over 30 publications worldwide.
• Editing Tools: Portal 2 editing tools will be included. Note: To be made available after launch.

PC System Requirements

Mac System Requirements