 The most notable gameplay change in Marvel Super Heroes vs. Street Fighter is the addition of the " Variable Assist " . With the Variable Assist , the player can summon their off @-@ screen character to perform a special move without changing their currently @-@ controlled character , opening new possibilities for combos during battle and greatly expanding the role of the secondary character . The ability to use assists would later become a signature gameplay element used in several future installments of the Marvel vs. Capcom series . 
