| | Janken Man Kattara Ageru | 1991 | Sunwise | jankenmn | | 0.00 |
| | Janpai Puzzle Choukou (Japan 010820) | 2001 | Mitchell (Capcom license) | choko | Unplayable | 8.38 |
| | Janputer '96 (Japan) | 1996 | Dynax | janptr96 | | 0.00 |
| | Janputer Special (Japan) | 1997 | Dynax | janptrsp | | 0.00 |
| | Janshi | 1992 | Eagle | janshi | | 0.00 |
| | Jansou (set 1) | 1985 | Dyna | jansou | | 0.00 |
| | Jansou (set 2) (clone of: jansou) | 1985 | Dyna | jansoua | | 0.00 |
| | Janyou Part II (ver 7.03, July 1 1983) (clone of: royalmj) | 1983 | Cosmo Denshi | janyoup2 | | 0.00 |
 | Jatre Specter (set 1) (clone of: invaders) | 1979 | bootleg (Jatre) | jspecter | Shooter / Gallery | 0.00 |
| Jatre Specter (set 2) (clone of: invaders) | 1979 | bootleg (Jatre) | jspecter2 | | 0.00 |
| | Jester Magic (Konami Endeavour) | 1969 | Konami | jestmagi | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 1) | 1969 | Barcrest | m4jwlcwn | | 10.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 10) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__i | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 11) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__j | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 12) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__k | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 13) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__l | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 14) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__m | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 15) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__n | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 16) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__o | | 0.00 |
| | Jewel In the Crown (Barcrest) (MPU4) (set 17) (clone of: m4jwlcwn) | 1969 | Barcrest | m4jwlcwn__p | | 0.00 |
