http://www.megalextoria.com/wordpress/index.php/2017/06/19/marvel-vs-capcom-sega-dreamcast/
Marvel Vs. Capcom: Clash of Super Heroes was actually the third entry in this series of arcade fighting games for which entries are still being produced. It was released as an arcade game in 1998 and about a year later was ported to the Sega Dreamcast with additional modes and enhancements including a four player mode. It was later also ported to the PlayStation but that system was more limited and many sacrifices in animation quality, modes of play, etc. were made. Both versions were positively received but the Dreamcast version was clearly better and even improved upon the original arcade game in some respects.
Each of these Marvel Vs. Capcom games expanded upon the base of fighters. It started with X-Men vs. Street Fighter, then Marvel Vs. Street Fighter with additional Street Fighter characters as well as Marvel Characters outside of the X-Men. Then this release, Marvel Vs. Capcom, expanded the Marvel characters further and also expanded to Capcom's other characters besides those in Street Fighter. They were all excellent 2D fighters and much like the Street Fighter II series of games.