"Super Mario Brothers Special" ran on the obscure Japanese PC-8001 computer, and was created in 1986 by veteran developers Hudson Soft. Looking and sounding very much like the arcade/NES original, SMB Special has two major differences to its parent.

Grab the ROM and PC-8001 emulator to play this new old Mario game!
Read on/Download Lost Mario game: Super Mario Brothers Special

This file has everything you need to play Super Mario Bros. Special: smbspecial.zip