| Sony PlayStation CD |  Elf wo Karu Monotachi II Model SLPS-01456~8 | 1998 | Altron Corp. |
| Sega Saturn CD | Elf wo Karu Monotachi II Model T-16610G | 1998 | Altron Corp. |
| Sony PlayStation CD | Honkaku Hanafuda Model SLPS-01656 | 1998 | Altron Corp. |
| Sega Saturn CD | Honkaku Hanafuda Model T-16611G | 1998 | Altron Corp. |
| Sega Saturn CD | Jung Rhythm | 1998 | Altron Corp. |
| Sony PlayStation CD | K.O. - The Live Boxing Model SLPS-01413 | 1998 | Altron Corp. |
| Sony PlayStation CD | Missland 2 Model SLPS-01715 | 1998 | Altron Corp. |
| Sony PlayStation CD | RoX - 6 = Six Model SLPS-01641 | 1998 | Altron Corp. |
| Sega Saturn CD | Rox 6=Six | 1998 | Altron Corp. |
| Sega Saturn CD | Sorvice | 1998 | Altron Corp. |
| Nintendo Game Boy Cart. | The New Chessmaster Model DMG-ACHJ-JPN | 1998 | Altron Corp. |
| Sega Saturn CD | Waku Waku Monster | 1998 | Altron Corp. |
| Nintendo 64 cart. | 64 Hanafuda - Tenshi no Yakusoku Model NUS-NHFJ | 1999 | Altron Corp. |
| Nintendo Game Boy Color cart. | Backgammon Model DMG-AAKJ-JPN | 1999 | Altron Corp. |
| Sony PlayStation CD | Backgammon Model SLPS-01782 | 1999 | Altron Corp. |
| Nintendo Game Boy Color cart. | Checkmate Model DMG-ACZJ-JPN | 1999 | Altron Corp. |
| Sega ST-V cart. | Danchi de Hanafuda - Okusan Komeya Desuyo! | 1999 | Altron Corp. |
| Nintendo Game Boy Color cart. | Little Magic Model CGB-ALJJ-JPN | 1999 | Altron Corp. |
| Sony PlayStation CD |  Mighty Hits Special Model SLES-02244 | 1999 | Altron Corp. |
| Sony PlayStation CD |  Pop Collection 1280 Vol. 3: City Bravo! Model SLPS-02166 | 1999 | Altron Corp. |
| Sony PlayStation CD | Pop Collection 1280 Vol. 4: Mighty Hits Special Model SLPS-02165 | 1999 | Altron Corp. |
| Sony PlayStation CD | Pop Collection 1280: Missland Model SLPS-02104 | 1999 | Altron Corp. |
| Sony PlayStation CD | Pop Collection: Robo-Pit 2 Model SLPS-02382 | 1999 | Altron Corp. |
| Sony PlayStation CD | Pop Collection: RoX - 6 = Six Model SLPS-02388 | 1999 | Altron Corp. |
| Nintendo Game Boy Color cart. | Rox - 6=Six Model DMG-ARXJ-JPN | 1999 | Altron Corp. |
| NEC PC-9801 Series 5.25in. disk | Ugokue Ver. 1.1: Olivias Mystery | 199? | Altron Corp. |
| NEC PC-9801 Series 3.5in. disk | Ugokue Ver. 1.1: Olivias Mystery | 199? | Altron Corp. |
| Sony PlayStation CD | City Bravo! Business-hen Model SLPS-02421 | 2000 | Altron Corp. |
| Sony PlayStation CD | Colorful Logic Model SLPS-02794 | 2000 | Altron Corp. |
| Sega ST-V cart. | Danchi de Quiz Okusan Yontaku Desuyo! | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | Elevator Action EX Model CGB-BEXJ-JPN | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | Honkaku Hanafuda GB Model CGB-AH3J-JPN | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | Jet de Go! Model CGB-BJEJ-JPN | 2000 | Altron Corp. |
| Sony PlayStation CD | K.O. - The Live Boxing Model SLPS-02698 | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | K.O. - The Pro Boxing Model CGB-BKOJ-JPN | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | Puzzle Bobble 4 Model DMG-AA4J-JPN | 2000 | Altron Corp. |
| Nintendo Game Boy Color cart. | Puzzle Bobble Millennium Model CGB-BP5J-JPN | 2000 | Altron Corp. |
| Sony PlayStation CD | Backgammon Model SLPS-03228 | 2001 | Altron Corp. |
| Sony PlayStation CD | Checkmate Model SLPS-03136 | 2001 | Altron Corp. |
| Sony PlayStation CD | Cleopatra Fortune Model SLPS-03187 P | 2001 | Altron Corp. |
