If you are into fighting games, you'll want to check this one out. However, if you don't dig button mashing player on player fighters then you may want to move on.
This game is a fighter through and through, with only small deviations from that by the way of minigames. These minigames are the first chance I've had to use the touchpad on the PS4, however they are limited to motions like flip up, flip left, etc, and as far as I can tell the touchpad serves no function during normal play.
The level transitions while fighting are fun to see a few times, then become tedious and seem to take forever after seeing it for the 27th time. That being said, watching the reaction of a friend new to the game being smashed through a 300 foot drop while they bang their head on every pipe and metal structure along the way is pretty entertaining.
I grew up on fighters, and this one is impressive, but found that I've outgrown them in general as I've gotten older. However if you dig the genre, then Injustice will scratch the itch.