- Year: 1998
- Platform: SEGA Saturn
- Publisher: KOEI Co., Ltd.
- Developer: KOEI Co., Ltd.
- Theme: Managerial
In 1998, KOEI Co., Ltd. publishes Daikōkai Jidai: Gaiden on SEGA Saturn. This role-playing (rpg) and simulation game is now abandonware and is set in a managerial, naval, real-time, trade and romance themes.