Wikipedia
Psyonix Inc. is an American video game development studio based in San Diego, California. The company focuses on its own development, as well as contributing to larger companies and publishers utilizing the Unreal Engine. Psyonix was founded in the year 2000 by Dave Hagewood, after developing Internet and multimedia software under the name WebSite Machines. Its first game project was Proteus.
The company released Supersonic Acrobatic Rocket-Powered Battle-Cars and Monster Madness: Grave Danger in 2008, and continued on other projects including contract work for several big-budget titles. The company then worked on Battle-Cars's successor, Rocket League, which went on to become a commercial success for the company, grossing over $70 million. The success of Rocket League caused the company to adjust its business models, where the company would focus on developing their own original games instead of accepting more contract work.