Platform: Nintendo Entertainment System (NES)
Region: Region Not Set
Extra Mario Bros. is a hack of Super Mario Bros. featuring new levels, enemies, and mechanics. It combines the platforming of Mario with the Metroidvania mechanics of, well, Metroid. It has music from Metroid (and that one track from Wario Land) And features two endings.
ESRB Rating: Not Rated
Genre(s): Action | Platform | Unofficial