Left 4 Dead trailer part 1

Left 4 Dead (L4D) is a new action title from Valve, creators of the CounterStrike and HalfLife games, and promises to redefine the cooperative genre as those titles did for multiplayer and single player action games. Set in a modern day survivalhorror universe, the cooperative gameplay of L4D casts four Survivors in an epic struggle against hordes of swarming zombies and terrifying Boss Infected mutants. Valves next generation AI technology, allows for games of 1 to 8 players. Players can play as a Survivor or as one of four types of Boss Infected, each of whom possess a unique mutant ability such as a 50foot tongue lasso or a giant belly full of explosive methane gas. The gameplay takes place across four massive campaigns. The zombie population of each mission is choreographed by an AI Director that monitors the human players actions and creates a unique and dramatic experience for them on the