That idea of a world in crisis that quickly boils down to its brutal essence is reflected in Left 4 Dead's gameplay. Grab gun, kill zombies, and survive you journey from point A to point B by any means necessary. Even the controls are basic: Right trigger fires or attacks. You can carry only pistols and one other gun. The D-pad handles your basic gear - flashlight, homemade bombs, first aid, and pain pills. Valve has cut the bloated survival-horror game down to the bone."