Dr. Chaos (NES)

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Dr. Chaos
Platform: NES
Year: 1988
Developer: Marionette Co., Ltd.

Dr. Chaos is an Adventure title developed by Marionette, the same guy who also brought us Pool of Radiance (NES). In this game, you play as Michael Chaos. Your brother Ginn, who was performing scientific experiments in a haunted mansion until everything went to Hell (quite literally). Now, evil monsters invade the mansion and it is up to Michael to get rid of them and save his brother before it is too late.

The game is broken up into three sections; the mansion, the rooms, and the warp zones. You must find your way through certain warp zones and kill the boss at the end to get a blueprint to a special weapon needed to get rid of the final boss.

The game was released in Japan for the Famicom Disk System instead of the Famicom itself. Some things are different, like the warp zones are much shorter and you can also save your game.


Dr Chaos - NES - Title Screen.png

The title screen.

Dr Chaos - NES - Gameplay 1.png

Killing a rat in the mansion.

Dr Chaos - NES - Gameplay 2.png

Exploring a room.


The game's music is very mediocre, but it has a nice eerie theme, fitting the game's theme. The music was so bad that the composer used an alias, Ponii Ichinen. His real name has been revealed by the game's programmer, as Ponii is Hironari Tadokoro, the main composer at Marionette at the time. Not all of the songs are horrible, but they suffer many flaws, like some of the notes in the sound driver are out of tune, the instruments are very loud and dull, the songs are short and will annoy you, etc. It also doesn't help that the Disk System version doesn't take advantage of the Disk System's extra sound channel.

Hironari composed the music by programming the sound driver and writing it in Music Macro Language.








01 Title Screen Hironari Tadokoro 1:36


(Sources: NES, FDS)

The NES and Famicom Disk System version's credits are a little different, as some of the staff members use different aliases, the font is different, and the Pony Canyon logo is in a different place. Tadokoro is also listed as an assistant programmer.

Game Rip





The NSF contains only the 7 songs. NSF ripping is an arduous process that is beyond the scope of this site. The recording was made in VirtuaNSF.


  Japan.svg   Japan
Dr. Chaos - FDS.jpg
Title: ドクター カオス: 地獄の扉 (Dr. Chaos: Hell's Door)
Platform: Famicom Disk System
Released: 1987/06/19
Publisher: Ponyca
  USA.svg   USA
Dr. Chaos - NES.jpg
Title: Dr. Chaos
Platform: NES
Released: 1988/11/??
Publisher: Fujisankei Communications, Inc.