Applications Affected by Bug #22534

Left 4 Dead is a multiplayer co-operative survival horror first-person shooter game from Valve Corporation. The game has been built using Valve's Source engine.

Left 4 Dead pits four human playable or AI controlled survivors of an apocalyptic pandemic against hordes of aggressive "Infected". The Survivors' goal is to help each other make it through various scenarios to safety. The Infected are controlled by an AI that dynamically balances difficulty and mood depending on the players' progress and situation. In an alternate game mode, human players can control up to four mutated Boss Infected with special abilities and cooperate to stop the Survivor players.

Note: Natively available for Linux.

Left 4 Dead 2 is the sequel to Valve Corporation's award-winning Left 4 Dead. Like the original, Left 4 Dead 2 is set during the aftermath of an apocalyptic pandemic, and focuses on four survivors fighting against hordes of the infected. The survivors must fight their way through levels, interspersed with safehouses that act as checkpoints, with the goal of reaching a rescue vehicle at the campaign's finale. The gameplay is procedurally altered by an artificial intelligence engine dubbed the "Director" that monitors the players' performance and alters the scenario to provide a dynamic challenge for the players as they progress. Several new features will be introduced, such as new types of infected, melee weapons, and a story-arc that connects each of the game's five campaigns together.

Note: Natively available for Linux.