 | Knights of the Round (bootleg) (clone of: knights) | 1991 | bootleg | knightsb | | 0.00 |
| Knights of the Round (Japan 911127, B-Board 89625B-1) (clone of: knights) | 1991 | Capcom | knightsja | | 0.00 |
| Knights of the Round (Japan 911127, B-Board 91634B-2) (clone of: knights) | 1991 | Capcom | knightsj | Fighter / 2.5D | 0.00 |
| Knights of the Round (USA 911127) (clone of: knights) | 1991 | Capcom | knightsu | Fighter / 2.5D | 0.00 |
| Knights of the Round (World 911127) | 1991 | Capcom | knights | Fighter / 2.5D | 7.71 |
 | Legend of Success Joe / Ashitano Joe Densetsu | 1991 | SNK | legendos | Fighter / Versus | 1.53 |
 | Lemmings (US prototype) | 1991 | Data East USA | lemmings | Puzzle | 6.00 |
 | Lethal Thunder (World) | 1991 | Irem | lethalth | Shooter / Flying Vertical | 6.50 |
 | Limited Edition Hang-On (clone of: shangon) | 1991 | Sega | shangonle | | 0.00 |
| | Lucky Girl (newer Z180 based hardware) | 1991 | Wing Co., Ltd. | luckgrln | | 0.00 |
| | Lucky Lady (3x3 deal) (clone of: royalcrd) | 1991 | TAB Austria | lluck3x3 | | 0.00 |
| | Lucky Lady (4x1 aces) (clone of: royalcrd) | 1991 | TAB Austria | lluck4x1 | | 0.00 |
 | Magical Crystals (Japan, 92/01/13) (clone of: mgcrystl) | 1991 | Kaneko (Atlus license) | mgcrystlj | | 0.00 |
| Magical Crystals (World, 91/12/10) (clone of: mgcrystl) | 1991 | Kaneko | mgcrystlo | | 0.00 |
| Magical Crystals (World, 92/01/10) | 1991 | Kaneko | mgcrystl | Maze / Shooter Large | 7.50 |
| | Magical Odds (set 4, custom encrypted CPU block) (clone of: magodds) | 1991 | Pal Company | magoddsc | | 0.00 |
| | Magical Odds (set 5, custom encrypted CPU block) (clone of: magodds) | 1991 | Pal Company | magoddsd | | 0.00 |
 | Mahjong Angels - Comic Theater Vol.2 (Japan) | 1991 | Dynax | mjangels | Tabletop / Mahjong *Mature* | 0.00 |
 | Mahjong Bakuhatsu Junjouden (Japan) (clone of: mjgottsu) | 1991 | Nichibutsu | bakuhatu | Tabletop / Mahjong *Mature* | 0.00 |
| | Mahjong Comic Gekijou Vol.1 (Japan) | 1991 | Dynax | mjcomv1 | | 0.00 |
