| | Idol Janshi Suchie-Pai 3 (JPN) | 1999 | Jaleco | suchie3 | | 8.17 |
| | Invasion - The Abductors (version 4.0) (clone of: invasnab) | 1999 | Midway | invasnv4 | | 0.00 |
| | Invasion - The Abductors (version 5.0) | 1999 | Midway | invasnab | | 7.00 |
| | Jambo! Safari (JPN, USA, EXP, KOR, AUS) (Rev A) | 1999 | Sega | jambo | | 0.00 |
 | JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990913) (clone of: jojoba) | 1999 | Capcom | jojobar1 | | 0.00 |
| JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990913, NO CD) (clone of: jojoba) | 1999 | Capcom | jojobanr1 | | 0.00 |
| JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990927) | 1999 | Capcom | jojoba | Unplayable | 8.66 |
| JoJo no Kimyou na Bouken: Mirai e no Isan (Japan 990927, NO CD) (clone of: jojoba) | 1999 | Capcom | jojoban | | 0.00 |
| JoJo's Bizarre Adventure (Euro 990913, NO CD) (clone of: jojoba) | 1999 | Capcom | jojobaner1 | | 0.00 |
| JoJo's Bizarre Adventure (Euro 990927, NO CD) (clone of: jojoba) | 1999 | Capcom | jojobane | | 0.00 |
| | Jumping Break | 1999 | F2 System | jmpbreak | | 0.00 |
| | Jyangokushi: Haoh no Saihai (Japan 990527) | 1999 | Capcom | jyangoku | | 0.00 |
| | Kaiun Quiz (Japan, KW1/VER.A) | 1999 | Namco | kaiunqz | | 0.00 |
| | King of Dynast Gear (version 1.8) | 1999 | EZ Graphics | kdynastg | | 8.00 |
| | KlonDike+ | 1999 | Eolith | klondkp | | 5.00 |
 | Knights of Valour / Sangoku Senki (ver. 100, Japanese Board) (clone of: kov) | 1999 | IGS | kov100 | | 0.00 |
| Knights of Valour / Sangoku Senki (ver. 115) (clone of: kov) | 1999 | IGS | kov115 | Fighter / 2.5D | 0.00 |
| Knights of Valour / Sangoku Senki (ver. 117) | 1999 | IGS | kov | Fighter / 2.5D | 5.78 |
| | Knights of Valour Plus / Sangoku Senki Plus (ver. 119, set 1) | 1999 | IGS | kovplus | Fighter / 2.5D | 3.70 |
| | Knights of Valour Plus / Sangoku Senki Plus (ver. 119, set 2) (clone of: kovplus) | 1999 | IGS | kovplusa | Fighter / 2.5D | 0.00 |
