There are three "Teenage Mutant Ninja Turtles: Tournament Fighters" games; one for NES, one for SNES, and one, for Sega Genesis. Despite sharing the same title, all three games are different from each other.
The three different releases (NES, SNES and Sega Genesis) have different Turtles on the covers. The NES version has Leonardo on the cover, the SNES version has Donatello on the cover and the Sega Genesis has Raphael on the cover.