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Review: Portal 2 Marries Indie Design, Blockbuster Budget | WIRED
Review: Portal 2 | Angry Bee Gaming
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Review: Portal 2 (PS3, Xbox 360, Steam) – SideQuesting
Longplay of Portal 2 - Co-op Peer Review (DLC) - YouTube
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Portal 2 - Xbox 360 | Valve | GameStop
A Beaming Review of Portal 2 – Stephen Niven
Portal 2 - Wikipedia
Portal 2 Review – SmashPad
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Why only an Xbox 360 review for Portal 2? - GameSpot
GameSpot Reviews - Portal 2 - YouTube
Coffee With Games: PS3 vs. Xbox 360: Portal 2's April Sales Ranks - Analysis with Chart
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Portal 2 Review (Xbox 360) | stuffthatiwriteabout
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Portal 2 PC Review
