Psyonix Inc. is an American video game development studio. It is based in San Diego, California. They were founded in 2000. They were officially incorporated on April 30, 2001. Psyonix are best known for publishing and developing "Rocket League" since 2015. "Rocket League" is a sequel to their other game, "Supersonic Acrobatic Rocket-Powered Battle-Cars" (2008).