You might not think about team-based online multiplayer going hand-in-hand with "survival horror" games--games like the Resident Evil series that give you only limited resources while pitting you against legions of horrible monsters, often in cramped confines. After all, classic survival horror games are usually single-player experiences because they're about your character being all alone in a hostile, zombie-filled world. But Turtle Rock Studios, a developer with credits that include Counter-Strike: Condition Zero and the Xbox version of Counter-Strike, is doing just that with Left 4 Dead. This new team-based game for the PC and Xbox 360 pits small teams of humans against "the infected," which are hordes of ordinary people transformed into mindless killing machines by a mysterious virus that has spread throughout the game's various environments. Gamepsot sat down with Turtle Rock's Michael Booth to get the first details.