Taking a break from meatier games before delving into The Last of Us: Remastered, I've been burning a lot of time into Rocket League on PS4. Very surprised it was announced as free for PS+ on release, as I was mulling over buying it outright.
The game is like an over-the-top car version of soccer. The games range from 1v1 to 4v4, but the online games & league mode are the most fun to me in at least a 3v3 mode. You play on a field surrounded by a cage which you can drive up and across. There is a boost gauge you fill by running over yellow markers on the ground, whcih are good to catch up to a runaway ball, or if you're aggressive, you can boost fast enough to destroy opponents' cars if you ram into them. You also have a double-jump that works pretty well for both blocking shots and turning yourself around if you find yourself facing the wrong way. Games last 5 minutes, which given the fast-pace nature of the game is perfect for a very frantic, generally high scoring game.
Fun game. Don't hesitate to download if you have PS+. There have been some occasional challenges in the servers showing offline for the game occasionally, but i'm hoping that's a temporary problem due to the game coming out.
Rocket League is great fun. Best new multiplayer experience I've had in a few years I think. Very simple to pick up, but difficult to master. They've seemingly got past all their server issues as I haven't experienced any for a while. Get this one PS+ owners before it costs money!!