There are marked spaces within the field where players can pass their cars to get speed boosts. Speed boosts are used to increase the performance of the cars quite significantly and can give a player numerous advantages in gameplay.
Rocket League was released as a modification of the Supersonic Acrobatic RPBC. Psyonix developed battle cars. One of Psyonix's goals was to make the unreal cars feel fun to drive without compromising realism.
After developing the Battle-Cars, Psyonix tried to sell the game to a publisher as a soccer game with rocket-powered cars, but they received no interest from all the publishers. They then opted to publish the game themselves on the PlayStation Network, with nearly no marketing.
The game was downloaded over two million times. However, the studio left it at that for a while to work on other projects. The other projects helped generate funds that were later injected into Battle-Cars to make it a success.
Rocket League development, which came from the Battle-Cars project, started in 2013 and cost about two million dollars. Some of the adjustments made to transform Battle-Cars to Rocket League included increasing the frame rate from 30 to 60 to make it suitable for the newer hardware.
After the release of the Rocket League, it became relatively popular on various streaming platforms, including Twitch. The first Rocket League Championship Series took place in 2016, having a cash prize of $55,000. It made more than a million dollars in revenue through the sales of in-game cosmetic items and crates. The funds were mainly used to fund other competitive events, resulting in the increased popularity of the game as an eSport.