Avalanche Studios Group is a Swedish video game developer and publisher based in Stockholm. It is a parent company that includes Avalanche Studios, Expansive Worlds, and Systemic Reaction. Founded by Linus Blomberg and Christofer Sundberg in March 2003, Avalanche Studios focuses on developing open world projects and bases them on their proprietary Apex game engine (formerly known as Avalanche Engine). The company is best known for developing the Just Cause game series.