Remember
Super Mario Bros. Special for NEC's obscure PC-88 computer? Well turns out it spread into Sharp territory as well.
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Presenting the hideously rare Sharp X1 port, kindly pointed out by local legend Techokami. Like the PC-88, the Sharp X1 is a fairly obscure computer that didn't get very far outside of Japan, but because the Sharp X1 has the advantage of being a better bit of kit, this time the game is actually bearable.
Though it's mostly the same game, the X1 port benefits from slightly better graphics, "Zelda-like" scrolling (as opposed to the static screens of the PC-88 copy) and significantly less lag. It also seems to have introduced several new enemies and powerups, inspired by the Arcade classics Mario Bros. and Donkey Kong, and is the first Mario game in history to sport a "flight" powerup. It's actually quite a good game, which is a lot more than can be said of its awful NEC-licensed cousin.
I'll be going into more detail with this in due time, which may possibly involve some sprite ripping like the good old days. Until then, spread the word that this thing exists, because it's been hidden from the mainstream general public for the best part of twenty-five years.