| | Monza GP | 1981 | Olympia | monzagp | Unplayable | 0.00 |
 | Moon Shuttle (Japan set 1) (clone of: mshuttle) | 1981 | Nichibutsu | mshuttlej | | 0.00 |
| Moon Shuttle (Japan set 2) (clone of: mshuttle) | 1981 | Nichibutsu | mshuttlej2 | | 0.00 |
| Moon Shuttle (US? set 1) | 1981 | Nichibutsu | mshuttle | Shooter / Gallery | 5.20 |
| Moon Shuttle (US? set 2) (clone of: mshuttle) | 1981 | Nichibutsu | mshuttle2 | | 0.00 |
| | Moon War (prototype on Frenzy hardware) | 1981 | Stern Electronics | moonwarp | | 6.00 |
 | Moonwar | 1981 | Stern Electronics | moonwar | Shooter / Flying | 4.57 |
| Moonwar (older) (clone of: moonwar) | 1981 | Stern Electronics | moonwara | Shooter / Flying | 0.00 |
 | Mouse Trap (version 3) (clone of: mtrap) | 1981 | Exidy | mtrap3 | Maze | 0.00 |
| Mouse Trap (version 4) (clone of: mtrap) | 1981 | Exidy | mtrap4 | Maze | 0.00 |
| Mouse Trap (version 5) | 1981 | Exidy | mtrap | Maze | 9.18 |
 | Ms. Pac Attack (clone of: mspacman) | 1981 | hack | mspacmat | Maze | 0.00 |
| Ms. Pac-Man | 1981 | Midway / General Computer Corporation | mspacman | Maze | 8.74 |
| Ms. Pac-Man (bootleg) (clone of: mspacman) | 1981 | bootleg | mspacmab | Maze | 0.00 |
| Ms. Pac-Man (bootleg, encrypted) (clone of: mspacman) | 1981 | bootleg | mspacmbe | | 0.00 |
| Ms. Pac-Man (with speedup hack) (clone of: mspacman) | 1981 | Midway / General Computer Corporation | mspacmnf | Maze | 10.00 |
| Ms. Pac-Man II (Orca bootleg set 1) (clone of: mspacman) | 1981 | bootleg (Orca) | mspacii | | 0.00 |
| Ms. Pac-Man II (Orca bootleg set 2) (clone of: mspacman) | 1981 | bootleg (Orca) | mspacii2 | | 0.00 |
| Ms. Pac-Man Plus (clone of: mspacman) | 1981 | hack | mspacpls | Maze | 0.00 |
| | Multi-Poker | 1981 | Merit | mpoker | | 5.50 |
