About Left 4 Dead

Left 4 Dead comes from Valve, the studio behind Counter-Strike and Half-Life, and delivers a co-op action horror experience that casts up to four players in a desperate fight for survival against swarming zombie hordes and terrifying mutant monsters. Set in the immediate aftermath of the zombie apocalypse, its survival co-op mode has you blasting a path through the infected across four unique 'movies', guiding your survivors over the rooftops of an abandoned metropolis and through rural ghost towns and pitch-black forests as you try to escape a devastated Ground Zero.

Each movie is made up of five large maps and can be played by anywhere from one to four human players, with a strong emphasis on team-based strategy and clear objectives. The standout technology is the AI Director, which generates a fresh gameplay experience every single time you play by tailoring the frequency and ferocity of the zombie attacks to your performance. That dynamic pacing keeps you in the thick of a fast, Hollywood-style horror movie without becoming overwhelming, making this action FPS a landmark in cooperative survival gaming on PC.