10 Chambers is a Swedish game development studio best known for its cooperative first-person shooter GTFO, released in 2019. The studio was founded by former PAYDAY developers, including Ulf Andersson, and focuses on creating highly intense, immersive, and challenging multiplayer experiences. GTFO is praised for its blend of tactical team play, survival horror elements, and its evolving content, known as "The Rundown," which continuously updates the game's missions. 10 Chambers is recognized for pushing the boundaries of cooperative gameplay, delivering highly strategic and tension-filled experiences.