Super Mario World (Unl) [b1] ROM download is available to play for Sega Genesis. This Mario game is the US English version at EmulatorGames.net exclusively. Download Super Mario World (Unl) [b1] ROM and use it with an emulator. Play online Sega game on desktop PC, mobile, and tablets in maximum quality. If you enjoy this free ROM on Emulator Games then you will also like similar titles Super Mario World and Super Mario Advance 4 - Super Mario Bros. 3 (V1.1).