Title: Injyu Genma 2: Brainburst!
Compressed Size: 3.02 MB
Image Format: 1 HDI file
The sequel to the original tentacle thriller, this one is quiz game ratherthan a hanafuda game. You'd need japanese knowledge to play, but with only 2 answer choices, it appears it's rather easy. The third game appears to have come out for the PC only, rather than a dedicated PC-98 release.