You're still snubbing PS3 on the Left 4 Dead front. Surely this has to come down to your preference as a company now, rather than any sort of technical limitation?
"I think I'd use a little bit of the same answers. We look at it as if we were customers of this product, how would we want to be treated and what sort of product would we want out of it?
"We've run a couple of experiments over the years of PlayStation in general; we did Half-Life on PS2 with an outside company and then we did Orange Box PS3 with an outside company. We weren't able to deliver the same type of product on PS3 and PS2 for that matter that we were on the 360 and PC.
"If you look at it as a matter of Valve doing it, Valve did the 360 and the PC version of the Orange Box and they both go 96 on Metacritic - The PS3 version was nowhere close to that. Left 4 Dead got a 89 or a 90 on 360 and PC.
"We're really, really proud of the fact that whatever platform you play the game on you're getting the same experience, you're getting the same Metacritic score. And with Left 4 Dead, you're getting the same DLC with the survival pack and some of the stuff that we have coming.
"Until we have the ability to get a PS3 team together, until we find the people who want to come to Valve or who are at Valve who want to work on that, I don't really see us moving to that platform.
"We've kind of learned a lesson in that again, if we were customers of that product on PlayStation, we'd feel like we sort of got the stepchild version of the product while the guys on the PC and the 360 got the sweet version of it."