Infestation is a free-to-play zombie massively multiplayer online game presented by Fredaikis AB. The title combines a large open-world shooter with several ways to play, offering four separate game modes within one game. Its setting features multiple types of zombies, including especially strong and powerful enemies, while player-versus-player encounters add a competitive dimension across different game modes and worlds.

Players can download the game directly or access it through Steam, and the website provides registration and login options for the community. Infestation also offers player support, game news, and an online store, alongside links to its Discord community. The site publishes the game’s EULA, privacy policy, and in-game rules, giving players access to information about using the service and participating in the game.

Designed for players interested in zombie survival and multiplayer action, Infestation brings open-world exploration, zombie combat, and PvP gameplay together in a free-to-play experience. Fredaikis AB is identified on the website as the company responsible for the title.