You can probably expect a Left 4 Dead 3 at some point, Valve's Chet Faliszek has revealed, but don't go banging on about dates and times just yet.
"A 3? You know, some time down the road," the long-standing Valve writer told Eurogamer over the weekend. "Like anything, I would say that to all of our games. So that's not a promise of when or where.
"I really love working on that series," he added. "It's one of my favourite series. It's just so much fun with the characters and the world. I love zombies and I love horror. So, yeah."
Prior Left 4 Deads have traded on a hyper-responsive, punishing AI system known as the "AI Director", which alters where and when zombies spawn in response to Survivor success or lack thereof. Intriguingly, Faliszek reckons there's something to the idea of a Left 4 Dead which puts a player in charge of all that.
"That was the thing with that rumour that came out about The Cabin in the Woods," he said, referring to a cancelled Left 4 Dead 2 DLC pack which would have taken place in the same world as the cult MGM film. "That got no further than us discussing it, but we thought it would be cool idea if somebody could play as the dungeon master and put it out. But obviously there's a lot of work that needs to be done to do that. But it would be interesting.
"You'd have to start testing it," Faliszek elaborated. "You'd need an economy of points that the dungeon master was spending. There's a 10 vs. 10 mod for Left 4 Dead, and one day me and Matt Scott, the animator, were playing it.
"For a really long stretch of time we just kept saving up all the points, and at one point we just started spawning witches everywhere, just non-stop. It made us laugh. Stuff like that you have to figure out."