Rocket League is a vehicular developed and published by . The game was first released for and in July 2015, with ports for and being released later on. In June 2016, began distributing a physical retail version for PlayStation 4 and Xbox One, with taking over those duties by the end of 2017. Versions for and were also released in 2016, but support for their online services was dropped in 2020. The game went in September 2020.
Described as "soccer, but with rocket-powered cars", Rocket League has up to eight players assigned to each of the two teams, using rocket-powered vehicles to hit a ball into their opponent's goal and score points over the course of a match. The game includes single-player and multiplayer modes which can be played both locally and online, including play between all versions. Later updates for the game enabled the ability to modify core rules and added new game modes, including ones based on and .
Rocket League is a sequel to Psyonix's ,(Also known as SARPBC) a 2008 video game for the . Battle-Cars received mixed reviews and was not a success, but gained a loyal fan base. Psyonix continued to support themselves through contract development work for other studios while looking to develop a sequel. Psyonix began formal development of Rocket League around 2013, refining the gameplay from Battle-Cars to address criticism and fan input. Psyonix also recognized their lack of marketing from Battle-Cars and engaged in both social media and promotions to market the game, including offering the game for free for members on release.
Rocket League was praised for its gameplay improvements over Battle-Cars, as well as its graphics and overall presentation, although some criticism was directed towards the game's physics engine. The game earned a number of industry awards, and saw over 10 million sales and 40 million players by the beginning of 2018. Rocket League has also been adopted as an , with professional players participating through and , along with Psyonix's own (RLCS).