| 3kokushi | | Sankokushi (Japan) | Mitchell | 1996 |
| galkoku | | Mahjong Gal no Kokuhaku (Japan, set 1) | Nichibutsu / T.R.Tec | 1989 |
| galkokua | galkoku | Mahjong Gal no Kokuhaku (Japan, set 2) | Nichibutsu / T.R.Tec | 1989 |
| gteikoku | uniwars | Gingateikoku no Gyakushu | Irem | 1980 |
| gteikokub | uniwars | Gingateikoku no Gyakushu (bootleg set 1) | bootleg | 1980 |
| gteikokub2 | uniwars | Gingateikoku no Gyakushu (bootleg set 2) | bootleg | 1980 |
| gteikokub3 | uniwars | Gingateikoku no Gyakushu (bootleg set 3) | bootleg (Honly) | 1980 |
| kok | | Povar / Sobrat' Buran / Agroprom (Arcade multi-game bootleg of ZX Spectrum 'Cookie', 'Jetpac' & 'Pssst') | bootleg | 19?? |
| kokoroj | | Soreike Kokology (Rev A) | Sega | 1992 |
| kokoroj2 | | Soreike Kokology Vol. 2 - Kokoro no Tanteikyoku | Sega | 1993 |
| kokoroja | kokoroj | Soreike Kokology | Sega | 1992 |
| m1itskok | m1itsko | It's A Knockout (Maygay) (M1A/B) (set 12) | Maygay | 199? |
