Valve “gunning for” Portal 2 PS3/PC/Mac cross-platform play

Valve is hoping to make it possible for players on the PlayStation 3, PC and Mac to play Portal 2 together.

The studio’s project manager Erik Johnson revealed the bit while talking specifically about the game’s co-op play during an E3 presentation of the title, saying that cross-platform play is indeed something the developer is “gunning for.”

Xbox 360 is the odd man out for now because of Microsoft’s reluctance to open up the system for something like Steamworks, which Sony doesn’t mind. Xbox is still welcome to join the party but, according to Johnson, it’s a decision left in Microsoft’s court.