Portal 2 is this week's Midweek Madness! Celebrate the winner of three British Academy video game awards, including Best Game, by taking 50% off now through Thursday at 4pm Pacific Time!

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and includes an extensive single player campaign as well as the unique two-person co-op experience with it's own dedicated storyline.

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