 | Mario's Open Golf (PlayChoice-10) | 1991 | Nintendo | pc_moglf | Sports / Golf | 0.00 |
| | Master Boy (Italian, PCB Rev A) (clone of: mastboy) | 1991 | Gaelco | mastboyi | | 0.00 |
| | Master Boy (Spanish, PCB Rev A) | 1991 | Gaelco | mastboy | | 6.00 |
![Medal Mahjong Gottsu ee-kanji [BET] (Japan)](../snapsmall/MS_4450.html) | Medal Mahjong Gottsu ee-kanji [BET] (Japan) | 1991 | Nichibutsu | mjgottub | Tabletop / Mahjong *Mature* | 0.00 |
 | Metal Black (Japan) (clone of: metalb) | 1991 | Taito Corporation | metalbj | Shooter / Flying Horizontal | 0.00 |
| Metal Black (World) | 1991 | Taito Corporation Japan | metalb | Shooter / Flying Horizontal | 7.00 |
 | Mogura Desse (Japan) | 1991 | Konami | mogura | Misc. | 0.00 |
 | Nekketsu Grand-Prix Gal (Japan) | 1991 | Nichibutsu | ngpgal | Tabletop / Mahjong *Mature* | 5.50 |
 | Nekketsu Mahjong Sengen! AFTER 5 (Japan) | 1991 | Video System Co. | nmsengen | Tabletop / Mahjong *Mature* | 0.00 |
 | Ninja Clowns (08/27/91) | 1991 | Strata/Incredible Technologies | ninclown | Fighter / 2.5D | 6.66 |
 | Ninja Gaiden Episode III: The Ancient Ship of Doom (PlayChoice-10) | 1991 | Tecmo (Nintendo of America license) | pc_ngai3 | Platform / Fighter Scrolling | 3.50 |
 | Off the Wall (2-player cocktail) (clone of: offtwall) | 1991 | Atari Games | offtwallc | | 0.00 |
| Off the Wall (2/3-player upright) | 1991 | Atari Games | offtwall | Breakout | 5.00 |
| | Option 3 (v1.0) (Datapak) (MPU4 Video) (clone of: v4opt3) | 1991 | Barcrest | v4opt3d | | 0.00 |
| | Option 3 (v1.0) (MPU4 Video) | 1991 | Barcrest | v4opt3 | | 0.00 |
 | Pairs Love | 1991 | Athena | pairlove | Puzzle / Match *Mature* | 0.00 |
 | Peggle (Joystick, v1.0) | 1991 | Strata/Incredible Technologies | peggle | Ball & Paddle | 6.13 |
| Peggle (Trackball, v1.0) (clone of: peggle) | 1991 | Strata/Incredible Technologies | pegglet | Ball & Paddle | 0.00 |
 | Photo Finish (clone of: wwjgtin) | 1991 | bootleg? | photof | | 0.00 |
 | Pipi & Bibis / Whoopee!! (bootleg) (clone of: pipibibs) | 1991 | bootleg (Ryouta Kikaku) | pipibibsbl | | 0.00 |
