Lethal League Blaze

This has a fairly sizeable solo story to play, a few match types which are all fun, all the characters have enough of a difference to be interesting, the beats are banging, the visuals are cool. This is going to live or die based on how popular it is, but even for those wanting an offline experience it's decent for what it is. The gameplay is flawless (simplistic on the surface, exciting, depth if you're great), which makes this worth playing even if you think the quantity of content is lacking.

Fun, fast-paced, easy to grasp - a great choice for a short multiplayer session.