In just three weeks, Rocket League has been downloaded by over five million players. Since the game's July 7th launch, Rocket League has exploded in popularity on the internet. To make soccer interesting, it only needed a heaping helping of demolition derbies. The game has doubled the sales of its predecessor, Supersonic Acrobatic Rocket-Powered Battle-Cars, and there's no sign of stopping due to the game's promotion on PS4, involving a free download for PS Plus subscribers. About 4.5 million downloads came from the PlayStation 4, leaving about 500,000 downloads on PC. Rocket League is still free for PS Plus members until August 4th.