The storyline of the game takes various bits of the manga and mixes them together. It is a merger of "Assassins", "Mythos", and "The Underground Empire of Yomi". The art style of the FMV cutscenes mostly references the character designs as seen from the film Cyborg 009 The Movie: Legend of the Super Galaxy (save for 001 having white hair …

A-Rank Thunder Tanjouhen is a adventure game released in 1993 on Mega-CD. The game was developed by Riot and released by Telenet. The game's cover art was created by Yasushi Nirasawa, in his position as a model-builder for Hobby Japan magazine.

Psycho Dream is an Action game, developed and published by Riot, which was released in Japan in 1992.