Valve has confirmed the PlayStation 3 version of Portal 2 will feature cross platform play, allowing PS3 owners to play multiplayer games with PC and Mac users.

At E3 2010, Valve announced the PS3 version would include Steamworks, a set of publishing and development tools that integrates, among other things, game updates and community features.Alongside cross platform play, PS3 owners also get persistent cloud-based storage of saved games, cross platform chat (PC/Mac and PS3), and a digital Steam Play copy of Portal 2 "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."No word yet if the Xbox 360 version will eventually get these features.