13" rating  and Super Nintendo and Game Boy would fit Nintendos censorship guidelines  (Nintendo had no game rating system and the Entertainment Software Rating  Board(ESRB) would be established two years later). When the blood was removed  from the SNES version and Game Boy Version, it was replaced with sweat and  fatalities for all versions were modified so there was no gore. The Sega  versions though had a secret code that could convert the game into an "MA