PC Engine games
From Sega Retro
The PC Engine, released in North America as the TurboGrafx-16 is a video game console originally developed by NEC Home Electronics and Hudson Soft in a collaborative effort between 1987 and 1994 (Japan)/1989 and 1995 (US). The system combined a Hudson-produced 8-bit CPU, the HuC6280A (an enhanced 6502 — the TurboGrafx-16 was, in fact, 8-bit — with a six-channel PCM sound system with a few perks) and rather capable video hardware (variable screen resolution, many colors on screen at once and very large sprites, though only two sprite "layers" with a background layer in between). Games were distributed on "HuCards" — effectively a ROM board on a card. There was also a CD add-on which also saw some Sega releases.
For information, see PC Engine.