Portal 2 PlayStation 4 Video Games
Level One – Portal 2 | Before I Kick
Portal 2' and 'Left 4 Dead' are now playable on Xbox One | Engadget
Portal 2 and Left 4 Dead receive Xbox One backwards compatibility | Eurogamer.net
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![Portal 2 [BC] - Xbox 360 | VideoGameX](https://www.videogamex.com/image/cache/catalog/X360/portal2_bc-1000x665w.jpg "Portal 2 [BC] - Xbox 360 | VideoGameX")
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Half-Life 2: The Orange Box | Xbox 360 | GameStop
September Xbox Games with Gold includes Portal 2 – Destructoid
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Xbox One X enhancements added for The Orange Box, Left 4 Dead - Polygon
