Dottori Kun © 1990 Sega.
A tiny maze game.
Main CPU : Zilog Z80 (@ 4 Mhz)
Screen orientation : Horizontal
Video resolution : 256 x 192 pixels
Screen refresh : 60.00 Hz
Palette colors : 2
Players : 1
Control : 8-way joystick
Buttons : 2
This is a game that Sega used to test the hardware, it was developing during the late 1980s through the early 1990s. It's a very small board (about 10cm x 10cm). It was never fully developed or intended to be released to the public.
There is a new version and an old version. The old version has a white background and all sprites are in black, the new version reverses that.