|Intelligent Systems, Co., Ltd.|
All of Intelligent Systems' NES games were only released in Japan, and used a sound driver by Hirokazu Tanaka, in which the music was written in 6502 assembly.
Intelligent Systems used their own version of Nintendo's Kankichi-kun sound driver, in which their variant was programmed by Kenichi Nishimaki.
- Hirokazu Tanaka
- Kenichi Nishimaki
- Kenji Yamamoto
- Kazumi Totaka
- Koichi Sugiyama - Contracted to compose one song for Backgammon (FDS).
- Masaya Kuzume
- Yuka Tsujiyoko