On July 11, 2015, Psyonix announced that it had about 120,000 players on both Windows and PlayStation 4. By the end of July, the game had been downloaded more than 5 million times, [141] and had 179,000 concurrent players. Psyonix points out that the rockets' "agile rhythm" is far more successful than they expected.

Psyonix announced that the game had sold more than a million copies on Steam in August 2015. By the end of 2015, the game had been downloaded more than 8 million times and grossed over $50 million. In February 2016, Psyonix said the rockets earned $70 billion in revenue and sales, not including at least four million copies of the PlayStation system Rocket League Crates. They have tracked at least 12 million unique game players, including purchase and free games, such as the availability of the PlayStation Plus membership program. Within three weeks of the Xbox One release, Psyonix looked at at least One million unique players for the system.

As of July 2016, a year after its release, Psyonix reported that more than 6.2 million games were sold on all platforms, including $5.5 million in DLC purchases, with revenue exceeding $110 million. Forty percent of the sales were in the PlayStation 4, and the rest of the PC and Xbox One split roughly the same. By January 2017, Psyonix has tracked more than 25 million unique players, with an average of 1.1 million players a day, and a total of 220,000 simultaneous players. SONY says the rocket alliance is the most downloaded game in the PlayStation Store in 2016. By early 2018, the number of players has risen to over 40 million.