This is the download for Supersonic Acrobatic Rocket Powered Battle Cars (Known as Rocket League). This lets you use a PS3 Emulator to run this game on PC as this game was only released on PlayStation 3 and cost's around $3 USD. There are still players on PSN playing on the original servers for this game, however you cannot currently do so but there is local split screen.
Here is the YouTube Tutorial by me: https://youtu.be/WYMuUjbtEo8