| stdragon | | Saint Dragon (set 1) | Jaleco | 1989 |
| stdragona | stdragon | Saint Dragon (set 2) | Jaleco | 1989 |
| stdragonb | stdragon | Saint Dragon (bootleg) | bootleg | 1989 |
| tdragon | | Thunder Dragon (8th Jan. 1992, unprotected) | NMK (Tecmo license) | 1991 |
| tdragon1 | tdragon | Thunder Dragon (4th Jun. 1991, protected) | NMK (Tecmo license) | 1991 |
| tdragon2 | | Thunder Dragon 2 (9th Nov. 1993) | NMK | 1993 |
| tdragon2a | tdragon2 | Thunder Dragon 2 (1st Oct. 1993) | NMK | 1993 |
| tdragon3h | tdragon2 | Thunder Dragon 3 (bootleg of Thunder Dragon 2) | bootleg (Conny Co Ltd.) | 1996 |
| tdragonb | tdragon | Thunder Dragon (bootleg with Raiden sounds, encrypted) | bootleg | 1991 |
| tdragonb2 | tdragon | Thunder Dragon (bootleg with reduced sound system) | bootleg | 1991 |
| tdragonb3 | tdragon | Thunder Dragon (bootleg with Raiden sounds, unencrypted) | bootleg | 1991 |
