While all versions share the same name, every one is it's own game with it's own unique mechanics. All four also had their own unique developers. The Super Nintendo version is a 2-D side scrolling action game with two lanes, akin to the two lane system in the early Fatal Fury series. The Sega Genesis/Mega Drive version is a 2-D side-scrolling beat-'em up. The Game Boy Version is a side scrolling action game, and is most similar to the SNES version, but with a single lane. The Game Gear Version is a competitive fighting game.