Left 4 Dead is a cooperative first-person shooter game developed by Valve Corporation. Set in a post-apocalyptic world overrun by zombies, players team up as survivors to fight their way through hordes of infected creatures. The game emphasizes teamwork and strategy, as players must work together to complete objectives and survive against overwhelming odds. The gameplay features various campaigns, each with unique environments and challenges. Players can choose from different characters, each with their own backstories, and utilize a wide array of weapons and items. Left 4 Dead has gained a dedicated fanbase and is celebrated for its intense action and replayability.