Rocket League's Xbox One release is proving popular. Developer Psyonix has announced that the Xbox One version, launched on February 17, has now passed more than 1 million unique players.

　　YES! We have officially eclipsed more than 1 MILLION unique players on @Xbox One! Thank you very much for continuing to support us!

　　— Rocket League (@RocketLeague) March 6, 2016

　　The game may not have actually sold that many copies on Xbox One, however. As Psyonix explained previously, since Rocket League offers split-screen play, each individual Xbox Gamertag is counted. This means the 1 million unique figures includes people who played Rocket League, but didn't necessarily buy a copy.

　　Still, 1 million is a big number.

　　As of February 26, Rocket League had reached 12 million players and 4 million copies sold across Xbox One, PS4, and PC.

　　Developed on a budget of only $2 million and with little marketing push, the game has now generated more than $70 million in revenue. In addition to revenue from game sales (Rocket League sells for $20), Psyonix makes money from Rocket League's $4 expansion packs such as Supersonic Fury, Chaos Run, and Revenge of the Battle Cars.

　　Additionally, Psyonix offers the Back to the Future pack for $2, while a Batman v Superman car pack is coming this month for the same price. Beyond that, Psyonix is talking with Universal pictures about bringing Knight Rider's KITT car to Rocket League.

　　Rocket League will expand its footprint further still, as Psyonix will release a physical version of the game at retail in the future.