 | JoJo's Venture (USA 990108) (clone of: jojo) | 1998 | Capcom | jojor1 | | 0.00 |
| JoJo's Venture (USA 990128) | 1998 | Capcom | jojo | Unplayable | 8.67 |
| | Jolly Card (Evona Electronic) (clone of: jollycrd) | 1998 | TAB Austria / Evona Electronic | jolycdev | | 0.00 |
| | Junai - Manatsu no First Kiss (Japan) | 1998 | Nichibutsu/eic | junai | | 0.00 |
| | Junai 2 - White Love Story (Japan) | 1998 | Nichibutsu/eic | junai2 | | 0.00 |
| | Konami 80's AC Special (GC826 VER. AAA) (clone of: konam80s) | 1998 | Konami | konam80a | | 0.00 |
| | Konami 80's AC Special (GC826 VER. EAA) | 1998 | Konami | konam80s | | 4.00 |
| | Konami 80's AC Special (GC826 VER. KAA) (clone of: konam80s) | 1998 | Konami | konam80k | | 0.00 |
| | Konami 80's AC Special (GC826 VER. UAA) (clone of: konam80s) | 1998 | Konami | konam80u | | 0.00 |
| | Konami 80's Gallery (GC826 VER. JAA) (clone of: konam80s) | 1998 | Konami | konam80j | | 0.00 |
 | Kosodate Quiz My Angel 3 (Japan, KQT1/VER.A) | 1998 | Namco | myangel3 | Quiz / Japanese | 7.17 |
| | L.A. Machineguns | 1998 | Sega | lamachin | | 0.00 |
 | Land Maker (Ver 2.01J 1998/06/01) | 1998 | Taito Corporation | landmakr | Puzzle / Toss | 7.33 |
| Land Maker (Ver 2.02O 1998/06/02) (Prototype) (clone of: landmakr) | 1998 | Taito Corporation | landmakrp | | 0.00 |
 | Lansquenet 2004 (Shock Troopers - 2nd Squad bootleg) (clone of: shocktr2) | 1998 | bootleg | lans2004 | | 0.00 |
| | Linky Pipe | 1998 | Eolith | linkypip | | 7.50 |
| | Lost in Space | 1998 | Sega | lostspc | | 0.00 |
| | Mad Ball V2.0 | 1998 | Yun Sung | madball | | 4.67 |
| | Magic Card Jackpot (4.01) (clone of: magicard) | 1998 | Impera | magicardj | | 0.00 |
| | Magical Tetris Challenge (981009 Japan) | 1998 | Capcom | mtetrisc | Unplayable | 8.44 |
