Left 4 Dead

Left 4 Dead is a survival horror series featured on Why We're Single and Top 5.

Game Information
Left 4 Dead is a series of cooperative first-person shooter survival horror games developed and published by Valve Corporation. Set in the days after a pandemic outbreak of a viral strain transforming people into feral undead creatures, the games follow the adventures of four survivors attempting to reach safe houses and military rescue while fending off the attacking hordes.

The games encourage cooperative play between up to four players, each taking the role of one of the survivors. Players use a combination of melee weapons, firearms, and thrown objects to fend off attacks from the bulk of the infected while using an assortment of healing items to keep their group alive. Certain unique infected pose a more difficult challenge and require teamwork to take down. The games are overseen by an "AI Director", designed to give the players a more dramatic and dynamic experience based on their performance, such as penalizing players for stalling while rewarding players with special weapons by taking longer or riskier paths.

The series has been well-received, with both major games in the series (2008's Left 4 Dead and 2009's Left 4 Dead 2) being met with positive reception upon release.

Notable Games

 * Left 4 Dead 2 is a 2009 cooperative first-person shooter game developed and published by Valve Corporation. The sequel to 2008's Left 4 Dead, the game builds upon the gameplay and source engine of its predecessor. Set during the aftermath of an apocalyptic pandemic, it follows four new Survivors who must fight their way through five campaigns against hordes of aggressive Infected, interspersed with safe houses that act as checkpoints, with the goal of escape at each campaign's finale. Gameplay is procedurally altered by the "AI Director 2.0", which monitors player performance and adjusts the scenario to provide a dynamic challenge.