Introducing the newest addition to
the Doom.Room madness:

Left4Dead!!

The coolest anti-zombie game on the planet!!
You are one of four trapped in a zombie infested nightmare.

Can you keep both yourself, and your team, alive long enough to escape the mayhem?
There are four playable human characters in the game: Francis, Zoey, Louis, and Bill.

(Borrowed from Wikipidia):
Left 4 Dead is a first-person shooter, though it makes use of the third-person perspective during cut scenes and some player actions.

In Campaign and Single-player mode, the player takes control of one of the Survivors; if four human players are not available, then the remaining Survivors are AI-controlled bots.
They play through the levels fighting off the "Infected"—living humans who have been infected with a mutagenic, rabies-like virus to which the Survivors are immune.

Are you tough enough to make it out alive?!!