a separate version was made for the simpler, 16-bit consoles, as the hardware could not support the complexity of the original game. it contained new level design and different graphics, and was released for sega mega drive and snes. later, it was released on the playstation portable as part of "ea replay", a compilation of retro games released in the united states on november 7, 2006; this version is the snes version and is executed on psp by an emulator.