Eens in de zoveel tijd proberen developers een game cross platform te maken, of te wel dat je met je PC tegen Xbox of PlayStation 3 bezitters kan spelen. Ook Valve gaat dit nu met Portal 2 weer eens uit proberen, en kunnen PC/Mac bezitters het tegen de PlayStation gamers op nemen. Zoals alle eerdere cross platform games is het vast gedoemd te mislukken, of misschien ook niet.

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.

"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."