At E3 last year, we learned that Portal 2 on PS3 would mark the debut of developer Valve's much-lauded Steam service on consoles, but we left wondering what that meant, exactly. Over the last ten months, we've managed to piece together a pretty comprehensive set of features; however, today, Valve issued a short press release that runs down a list, and even offers some new details.
Of course, Portal 2 on PS3 will offer cross-platform matchmaking with Steam friends, Steam achievements (in addition to PS3 trophies), and Steam Cloud support to save co-op and single-player game progress on PS3. Note: "Game saves and progress from a PlayStation 3 are incompatible with other platforms."
To access all these features, Portal 2 on PS3 will feature the familiar Steam overlay, giving players a quick way to access "both PSN and Steam friends," for text chats (and we presume voice chats), profiles, friend requests, and game invites. In order to access all these Steam-y features, you'll need to link your PSN account with your Steam account. Don't have a Steam account? You can make one "with the click of a button," Valve promises. And if you're wondering how that "free" Steam Play version on Mac or PC will work, Valve says, "linked players of the PS3 version of Portal 2 can also access and play their copy of Portal 2 on any PC or Mac by redeeming an in-box access code on their computer."
If this works as well as we think it will, we don't think we're alone in suggesting that all games ever should do this. Check out the associated Steam support page for plenty more in the way of details (and even some pics).