X-Men vs. Street Fighter (960909 Japan) is a crossover fighting game released in Japan on September 9th, 1996. Developed by Capcom, it features characters from both the X-Men and Street Fighter franchises.  The gameplay is a 2D fighting game with various special moves and characters to choose from.  Its innovative character roster and blend of universes were highly influential.

X-Men vs Street Fighter (960909 Japan)

X-Men (4 Players ver EBA)