4.4
Though the mechanics may be similar to other games like this, they did their best to make it unique while incorporating the RWBY theme in it
-It has a story in it, with the Chibi characters portraying them
-The characters are unlockable and they have skills that help you in the game. You can even get costumes for them that increase their stats
-It's online, with the ability to add friends and such, but also seems you can play it offline since I was given the choice before after a bad connection (I'll have to verify this properly)
-There are special modes in some stages
It's laggy at times though, during large effects or multiple power up triggers. Some animations aren't as smooth as I'd like them to be. It would've been more pleasing to the eye
A lot of features are coming too, and Battle Royale is one of them. Hopefully it doesn't become too much of a P2W