Turbografx-16
PC-Engine, TurboGrafx-16, TurboDuo. They're all the same thing; one pretty cool, underated game system. NEC just got overshadowed by Nintendo and Sega. It's the only place you can play Bonk, Parasol Stars (from the Bubble Bobble series), and Dracula X (from the Castlevania series).

Magic Engine is a Turbo Duo. It's just that good, and it is really hard to tell the difference. Some people complain that CD games don't run properly for them. I don't have that problem, so I don't know what's wrong there. I just know that I enjoy playing Dracula X. It costs $16 to register, but it's worth every penny.

What? You say Magic Engine doesn't play CD games right for you? Then you should try YAME.
What's YAME?? Glad you asked.

YAME is an emulator that almost nobody has heard of (well, at least almost nobody that doesn't speak Japanese). It actually plays Gameboy, NES, SNES, and PC-Engine/TG-16 games. And it's FREE.

Parasol Stars Bonk 3: Bonk's Big Adventure Dracula X: Rondo of Blood