Valve Software has announced the Steam features shipping with the PlayStation 3 version of the upcoming action puzzler Portal 2. Of interest to Mac users is the confirmation of cross platform play and chat with Mac and Windows versions of the game. Valve also revealed that those who purchase Portal 2 for PS3 will be given the Mac/Windows version for free.

"We made a promise to gamers at E3 that Portal 2 for the PlayStation 3 would be the best console version of the product," said Gabe Newell, co-founder and president of Valve. "Working together with Sony we have identified a set of features we believe are very compelling to gamers. We hope to expand upon the foundation being laid in Portal 2 with more Steam features and functionality in DLC and future content releases."

"We designed the Portal 2 PS3 experience to be very straightforward for gamers," said Josh Weier, project lead on Portal 2 at Valve. "PS3 gamers will be able to simply drop the Blu-Ray disc in the PS3, link to their Steam account from inside the game, and all their Steam friends (on PC and Mac) will be visible and accessible for chat and game invites."

Marking the debut of Steam functioning on any next generation console, the features shipping in the PS3 version of Portal 2 include cross platform play (PC/Mac vs. PS3) for multiplayer games, persistent cloud-based storage of PS3 saved games, and cross platform chat (PC/Mac and PS3).

In addition, those who purchase Portal 2 for the PlayStation 3 may unlock a Steam Play (PC & Mac) copy of Portal 2 at no additional cost by linking their PSN and Steam accounts.

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