Had a sick idea for a game.
34 Characters - 16 vs 16 + 2 Hidden
Roster consists of X-Men 92':
Cyclops, Jean Grey, Wolverine, Storm, Gambit, Rogue, Beast, Jubilee, Colossus, Cable, Iceman, Psylocke, Sabretooth, Juggernaut, Omega Red & Magneto
&
Super Street Fighter II:
Ryu, Ken, Chun-Li, E. Guile, E. Honda, Dhalsim, Blanka, Zangief, Cammy, Fei-Long, T. Hawk, Dee Jay, Boxer, Claw, Sagat & Dictator
Hidden #1: Akuma (Of course, he's the first Marvel game Crossover)
Hidden #2: Spider-Man (He crossed over with these X-Men in Spider-Man 94' season 2)
Boom, that's free real estate.