It was unclear if that functionality is limited to the Xbox 360 version, or if it will be included in the PC edition as well. The game will let players assume control of undead foes as well, though the exact details of that functionality have not been disclosed.

Newell also noted that the game's four survivor characters have been redesigned. The new character designs better reflect the characters' status as survivors of a recent outbreak instead of hardened battle veterans.

Louis, for example, has lost his dreadlocks and battle armor, replaced by blood-splatted dress shirt, a loose tie, and a bald head.

Left 4 Dead is slated to arrive November 4. More details on the playable undead are expected to arrive tomorrow during Shacknews' hands-on time with the title.