SEGA and Dengeki Bunko are working on a crossover fighting game. I kind of really want to play it. It’s arcade only at this point but it has Sword Art Online and Durarara!!! characters.
It also has SEGA stages.
NiGHTS into Dreams:
It doesn’t look terribly NiGHTS-esque to me, but perhaps it’s Twin Seeds or Bell Bridge or something. Maybe seeing more of the stage will reveal more NiGHTS-y stuff.
More info on Fighting Climax here.
It’s BellBridge from Journey of Dreams. In a fighting game.