| PC/MS-Windows CD |  GunYuu | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Houshin Engi Model SLPS-01547 | 1998 | KOEI Co., Ltd. Japan |
| Sega Saturn CD |  Koei Best Collection: Taikou Risshiden II Model T-7667G | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Koei Teiban: Nobunaga no Yabou - Returns Model SLPM-86169 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Koei the Best: Nanatsu no Hikan Model SLPM-86179~81 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Kouryuuki Model SLPS-01338 | 1998 | KOEI Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Monster Race Okawari Model DMG-AMFj-JPN | 1998 | KOEI Co., Ltd. Japan |
| Nintendo Game Boy Cart. | Monster Race Model DMG-AMRJ-JPN | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Monster Race Model SLPM-86143 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Moritaka Chisato - Safari Tokyo Model SLPM-86130~1 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Mouri Motonari - Chikai no Sanshi Model SLPS-01285 | 1998 | KOEI Co., Ltd. Japan |
| Sega Saturn CD | Nobunaga no Yabou - Sengoku Gunyuuden | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Nobunaga no Yabou - Sengoku Gunyuuden Model SLPS-01247 | 1998 | KOEI Co., Ltd. Japan |
| Sega Saturn CD | Nobunaga no Yabou Shouseiroku | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Oda Nobunaga Den Model SLPS-01595 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Sangoku Musou Model SLPM-86151 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Sangokushi II Model SLPS-01596 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Sangokushi VI Model SLPM-86129 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD |  Sanguozhi V Model SCPS-45128 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Soulmaster Model SLPM-86170 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Söldnerschild Special Model SLPS-01319 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Suikoden - Tendou 108 Sei Model SLPS-01305 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Tanoshii Mahjong Model SLPM-86172 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Teitoku no Ketsudan III with Power-Up Kit Model SLPS-01216 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Winning Post 2 - Program '96 Model SLPS-91082 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Winning Post 3 - Program '98 Model SLPM-86128 | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Winning Post 3 - Program '98 Model SLPM-86283 | 1998 | KOEI Co., Ltd. Japan |
| Sega Saturn CD | Winning Post 3 - Program '98 Model T-7671G | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Winning Post 3 Model SLPS-01263 | 1998 | KOEI Co., Ltd. Japan |
| Sega Saturn CD | Winning Post 3 Model T-7660G | 1998 | KOEI Co., Ltd. Japan |
| Sony PlayStation CD | Destrega Model SLUS-00732 | 1998 | KOEI Corp. CA, USA |
| PC/MS-Windows CD | The Soul | 1998 | KOGA Korea |
| PC/MS-Windows CD | Atria II - Buhwal | 1998 | KS Media Korea |
| PC/MS-Windows CD | Droiyan Next | 1998 | KS Media Korea |
| Sony PlayStation CD | Goiken Muyou II Model SLPS-01542 | 1998 | KSS Media Ent. Co. Japan |
| Sega Saturn CD | Mujintou Monogatari R - Futari no Love Love Island 18 | 1998 | KSS Media Ent. Co. Japan |
| Sony PlayStation CD | Nishijin Pachinko Tengoku Vol. 3 Model SLPS-01761 | 1998 | KSS Media Ent. Co. Japan |
| Sony PlayStation CD | Pro Wrestling Sengokuden 2 - Kakutou Emaki Model SLPS-01388 | 1998 | KSS Media Ent. Co. Japan |
| Sony PlayStation CD | Starlight Scramble - Ren'ai Kouhosei Model SLPS-01407 | 1998 | KSS Media Ent. Co. Japan |
| Sony PlayStation CD | The Hive Wars Model SLPS-00325~6 | 1998 | KSS Media Ent. Co. Japan |
