J.J. & Jeff (TG16)

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J.J. & Jeff
J.J. & Jeff - TG16.jpg
Platform: TurboGrafx-16
Year: 1988
Developer: Hudson Soft

J.J. & Jeff is one of the earliest TurboGrafx-16 games.

In Japan, the game was originally released as a game based on the comedy duo Kato-chan and Ken-chan. It featured a lot of toilet humor, which was removed when localized for North America.


J.J. & Jeff - TG16 - Title Screen.png

The title screen.

J.J. & Jeff - TG16 - Gameplay 1.png

Playing the first level.

J.J. & Jeff - TG16 - Gameplay 2.png

In the bonus area.


J.J. & Jeff has a really nice score for its time. This was one of Takeaki Kunimoto's earliest games that he worked on. There are some jazzy tunes, as well as rock tracks, but even in those, you can still hear Kunimoto's jazzy elements with the chord progressions. For unknown reasons, the sound driver plays the music a microtone (1/4 step) sharp, resulting in approximately A = 450Hz.

Takeaki wrote his music on the MSX computer, which was sent to Hudson Soft, and implemented into the game by Toshiyuki Sasagawa, who implemented the music using a PC-98 computer and Music Macro Language with Takayuki Iwabuchi's sound driver.


# Title Composer Length Listen Download
01 Title Screen Takeaki Kunimoto 0:22
02 Field 1 Takeaki Kunimoto 1:55
03 Bonus Area Takeaki Kunimoto 0:39
04 Area Clear Takeaki Kunimoto 0:05
05 Field 2 Takeaki Kunimoto 1:07
06 Field 3 Takeaki Kunimoto 1:30
07 Field 4 Takeaki Kunimoto 1:14
08 Field 5 Takeaki Kunimoto 1:55
09 Miss Takeaki Kunimoto 0:03
10 Boss Takeaki Kunimoto 1:19
11 Field Complete Takeaki Kunimoto 0:05
12 Ending Takeaki Kunimoto 0:39
13 Staff Roll Takeaki Kunimoto 2:55
14 Game Over Takeaki Kunimoto 0:10



The game's credits are seen after beating the game. However, they will not display if the player uses the level select cheat. Both the Japanese and US version of the game have the same exact credits.

Takayuki Iwabuchi has been confirmed as programming the game's sound driver, but he is not listed in the game's credits.

Game Rip



HES.png VGM.png

Ripping TurboGrafx-16 music is an arduous process that is beyond the scope of this site. The music was recorded using in_vgm for Winamp.

Audio Devices

The game uses the TurboGrafx-16's HuC6280. It uses Takayuki Iwabuchi's sound driver.


  Japan.svg   Japan
Kato-chan Ken-chan - PCE.jpg
Title: カトちゃんケンちゃん (Kato-chan Ken-chan)
Platform: PCE
Released: 1987-11-30
Publisher: Hudson Soft
  USA.svg   USA
J.J. & Jeff - TG16.jpg
Title: J.J. & Jeff
Platform: TG16
Released: 1990-??-??
Publisher: NEC