Rocket League is still a massively popular game, and it's about to get even better with new free DLC.
It's a new cosmetic item pack and for some reason it has ties to Portal from Valve. The latest in that series, Portal 2, released all the way back in 2011, and the first game was in 2007 so there's no real reason for this to be happening. But it is, and you will be thankful!
The items can be randomly earned after matches and will include add ons for your car like a Aperture Labs antenna and a Companion Cube. Everyone likes the Companion Cube. There's also a cake which you car can wear as a hat, and some personalisation you can do to your rocket trail.
It's not a huge amount of content but at least its free!
Get the Portal cosmetic pack in Rocket League from the 1st of December 2015.