Psyonix is an American game developer based in San Diego, known for its incredibly popular action-sports title, Rocket League. Established in 2001, Psyonix has previously contributed to titles in Epic’s Gears of War and Unreal Tournament franchises, among other Unreal Engine games, but it’s best known for the incredibly popular sports-action title Rocket League. In 2019 it was acquired by Epic Games.