Left 4 Dead series

The Left 4 Dead series is a cooperative first-person shooter video game focused on surviving a zombie apocalypse. Players assume the roles of different characters, working together to navigate through levels filled with hordes of zombies and other mutated creatures. The game emphasizes teamwork, quick decision-making, and strategic use of weapons and resources to overcome challenges. It features dynamic AI that adjusts difficulty to keep the game intense and unpredictable. The series is known for its high replayability, engaging multiplayer modes, and atmospheric, horror-themed environments.