Mann vs. Machine - The Sound of Medicine - Team Fortress 2

Team Fortress 2 is a main game, released in 2007, that offers a class-based shooter experience. You select from nine distinct mercenary classes, each with unique abilities and roles, to compete in objective-based team matches. The game features a humorous storyline and is known for its emphasis on character personality and extensive cosmetic customization, particularly hats, alongside consistent free content updates.