| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| montreal | Mephisto Montreal 68000 | 1993 | Hegener + Glaser | | | |
| montree | Money Tree (0201397V, New Zealand) | 2001 | Aristocrat | aristmk5 | | |
| montreux | Mephisto Montreux | 1995 | Saitek / Tasc | | | |
| monty | Monty Plays Scrabble | 1983 | Ritam | | | |
| monymony | Money Money (set 1) | 1983 | Zaccaria | | | |
| monymony2 | Money Money (set 2) | 1983 | Zaccaria | monymony | monymony | |
| monzagp | Monza GP (set 1) | 1981 | Olympia | | | |
| monzagpa | Monza GP (set 2) | 1981 | Olympia | monzagp | monzagp | |
| moogsource | Moog Source | 1981 | Moog Music | | | |
| moomesa | Wild West C.O.W.-Boys of Moo Mesa (ver EAB) | 1992 | Konami | | | |
| moomesaaab | Wild West C.O.W.-Boys of Moo Mesa (ver AAB) | 1992 | Konami | moomesa | moomesa | |
| moomesabl | Wild West C.O.W.-Boys of Moo Mesa (bootleg) | 1992 | bootleg | moomesa | moomesa | |
| moomesauab | Wild West C.O.W.-Boys of Moo Mesa (ver UAB) | 1992 | Konami | moomesa | moomesa | |
| moomesauac | Wild West C.O.W.-Boys of Moo Mesa (ver UAC) | 1992 | Konami | moomesa | moomesa | |
| moonal2 | Moon Alien Part 2 | 1980 | Namco / Nichibutsu | | | |
| moonal2b | Moon Alien Part 2 (older version) | 1980 | Namco / Nichibutsu | moonal2 | moonal2 | |
| moonaln | Moon Alien | 1979 | Namco / Nichibutsu (Karateco license?) | galaxian | galaxian | |
| moonbase | Moon Base Zeta (set 1) | 1979 | Taito / Nichibutsu | invadpt2 | invadpt2 | invaders |
| moonbasea | Moon Base Zeta (set 2) | 1979 | Taito / Nichibutsu | invadpt2 | invadpt2 | invaders |
| mooncmw | Moon War (bootleg of Moon Cresta) | 198? | bootleg | mooncrst | mooncrst | |
| mooncptc | Moon Cresta (Petaco S.A. Spanish bootleg) | 1980? | bootleg (Petaco S.A.) | mooncrst | mooncrst | |
| mooncrecm | Moon Cresta (Centromatic Spanish bootleg) | 1980 | bootleg (Centromatic) | mooncrst | mooncrst | |
| mooncreg | Moon Cresta (Electrogame S.A. Spanish bootleg, set 1) | 1980 | bootleg (Electrogame S.A.) | mooncrst | mooncrst | |
| mooncreg2 | Moon Cresta (Electrogame S.A. Spanish bootleg, set 2) | 1980 | bootleg (Electrogame S.A.) | mooncrst | mooncrst | |
| mooncrgx | Moon Cresta (bootleg on Galaxian hardware) | 1980 | bootleg | mooncrst | mooncrst | |
| mooncrs2 | Moon Cresta (bootleg set 2) | 1980 | bootleg | mooncrst | mooncrst | |
| mooncrs3 | Moon Cresta (bootleg set 3) | 1980 | bootleg (Jeutel) | mooncrst | mooncrst | |
| mooncrs4 | Moon Crest (bootleg of Moon Cresta) | 1980 | bootleg (SG-Florence) | mooncrst | mooncrst | |
| mooncrs5 | Moon Cresta (bootleg set 4) | 1980 | bootleg | mooncrst | mooncrst | |
| mooncrsb | Moon Cresta (bootleg set 1) | 1980 | bootleg | mooncrst | mooncrst | |
| mooncrsl | Cresta Mundo (Spanish bootleg of Moon Cresta) | 1980 | bootleg (Laguna S.A.) | mooncrst | mooncrst | |
| mooncrst | Moon Cresta (Nichibutsu) | 1980 | Nichibutsu | | | |
| mooncrst_sound | Moon Cresta Custom Sound | | | | | |
| mooncrstg | Moon Cresta (Gremlin) | 1980 | Nichibutsu (Gremlin license) | mooncrst | mooncrst | |
| mooncrsto | Moon Cresta (Nichibutsu, old rev) | 1980 | Nichibutsu | mooncrst | mooncrst | |
| mooncrstso | Moon Cresta (SegaSA / Sonic) | 1980 | bootleg (Sonic) | mooncrst | mooncrst | |
| mooncrstu | Moon Cresta (Nichibutsu USA, encrypted) | 1980 | Nichibutsu USA | mooncrst | mooncrst | |
| mooncrstuk | Moon Cresta (Nichibutsu UK) | 1980 | Nichibutsu UK | mooncrst | mooncrst | |
| mooncrstuku | Moon Cresta (Nichibutsu UK, unencrypted) | 1980 | Nichibutsu UK | mooncrst | mooncrst | |
| mooncrstuu | Moon Cresta (Nichibutsu USA, unencrypted) | 1980 | Nichibutsu USA | mooncrst | mooncrst | |
| moonfire | Moon Fire - Jackpot Carnival (30164211, Queensland) | 2004 | Aristocrat | indream | indream | |
| moonlght | Moon Light (v.0629, low program) | 199? | bootleg | goldstar | goldstar | |
| moonlghta | Moon Light (v.0629, high program) | 199? | bootleg | goldstar | goldstar | |
| moonlghtb | Moon Light (v.02L0A, low program) | 199? | bootleg | goldstar | goldstar | |
| moonlghtc | Moon Light (v.02L0A, high program, alt gfx) | 199? | bootleg | goldstar | goldstar | |
| moonqsr | Moon Quasar | 1980 | Nichibutsu | | | |
| moonwalt | Moonlight Waltz (10227611, NSW/ACT) | 2007 | Aristocrat | aristmk6 | | |
| moonwar | Moonwar | 1981 | Stern Electronics | | | |
| moonwara | Moonwar (older) | 1981 | Stern Electronics | moonwar | moonwar | |
| moonwarp | Moon War (prototype on Frenzy hardware) | 1981 | Stern Electronics | | | |
| morataka | Morskaja ataka | 19?? | bootleg (Elektronika) | gnw_mmouse | gnw_mmouse | |
| moremore | More More | 1999 | SemiCom / Exit | | | |
| moremorp | More More Plus | 1999 | SemiCom / Exit | | | |
| mortalr | Mortal Race | 1995 | New Dream Games | | | |
| mos5710 | MOS 5710 CIA | | | | | |
| mos6522 | MOS 6522 VIA | | | | | |
| mos6526 | MOS 6526 CIA | | | | | |
| mos6526a | MOS 6526A CIA | | | | | |
| mos6529 | MOS 6529 | | | | | |
| mos6530 | MOS 6530 MIOT | | | | | |
| mos6532 | MOS 6532 RIOT | | | | | |
| mos6551 | MOS 6551 ACIA | | | | | |
| mos6560 | MOS 6560 VIC | | | | | |
| mos6561 | MOS 6561 VIC | | | | | |
| mos6566 | MOS 6566 VIC-II | | | | | |
| mos6567 | MOS 6567 VIC-II | | | | | |
| mos6569 | MOS 6569 VIC-II | | | | | |
| mos656x_attack_ufo | MOS 656X VIC (Attack UFO) | | | | | |
| mos6581 | MOS 6581 SID | | | | | |
| mos6702 | MOS 6702 | | | | | |
| mos7360 | MOS 7360 TED | | | | | |
| mos8520 | MOS 8520 CIA | | | | | |
| mos8562 | MOS 8562 VIC-II | | | | | |
| mos8563 | MOS 8563 VDC | | | | | |
| mos8564 | MOS 8564 VIC-II | | | | | |
| mos8565 | MOS 8565 VIC-II | | | | | |
| mos8566 | MOS 8566 VIC-II | | | | | |
| mos8568 | MOS 8568 VDC | | | | | |
| mos8580 | MOS 8580 SID | | | | | |
| mos8706 | MOS 8706 | | | | | |
| mos8721 | MOS 8721 PLA | | | | | |
| mos8722 | MOS 8722 MMU | | | | | |
| mos8726 | MOS 8726 DMA Controller | | | | | |
| mosaic | Mosaic | 1990 | Space | | | |
| mosaica | Mosaic (Fuuki) | 1990 | Space (Fuuki license) | mosaic | mosaic | |
| mosaicf2 | Mosaic (F2 System) | 1999 | F2 System | | | |
| mosdraw | Montana Super Draw (4436-05, U5-0) | 1990 | Merit | | | |
| moshougi | Shougi no Tatsujin - Master of Shougi | 1995 | ADK / SNK | neogeo | | |
| motmarco | Marco | 1995 | Motorola | | | |
| motofren | Moto Frenzy | 1992 | Atari Games | | | |
| motofrenft | Moto Frenzy (Field Test Version) | 1992 | Atari Games | motofren | motofren | |
| motofrenmd | Moto Frenzy (Mini Deluxe) | 1992 | Atari Games | motofren | motofren | |
| motofrenmf | Moto Frenzy (Mini Deluxe Field Test Version) | 1992 | Atari Games | motofren | motofren | |
| motogonki | Motogonki | 198? | Terminal | | | |
| motogp | MotoGP (MGP1004-NA-B) | 2007 | Namco | sys256 | | |
| motorace | MotoRace USA | 1983 | Irem (Williams license) | travrusa | travrusa | |
| motoraid | Motor Raid - Twin | 1997 | Sega | | | |
| motoraiddx | Motor Raid - Twin/DX | 1997 | Sega | motoraid | motoraid | |
| motos | Motos | 1985 | Namco | | | |
| mototour | MotoTour / Zippy Race (Tecfri license) | 1983 | Irem (Tecfri license) | travrusa | travrusa | |
| motoxgo | Motocross Go! (US, MG3 Ver. A) | 1997 | Namco | | | |
| motoxgov1a | Motocross Go! (Japan, MG1 Ver. A, set 1) | 1997 | Namco | motoxgo | motoxgo | |
| motoxgov1a2 | Motocross Go! (Japan, MG1 Ver. A, set 2) | 1997 | Namco | motoxgo | motoxgo | |
| motoxgov2a | Motocross Go! (World, MG2 Ver. A, set 1) | 1997 | Namco | motoxgo | motoxgo | |
| motoxgov2a2 | Motocross Go! (World, MG2 Ver. A, set 2) | 1997 | Namco | motoxgo | motoxgo | |
| motrdome | MotorDome (rev. D) | 1986 | Bally | | | genpin |
| motrdomeb | MotorDome (rev. B) | 1986 | Bally | motrdome | motrdome | genpin |
| motrdomeg | MotorDome (German rev. B) | 1986 | Bally | motrdome | motrdome | genpin |
| motrshow | Motor Show (set 1) | 1989 | Zaccaria / Mr Game | | | genpin |
| motrshowa | Motor Show (set 2) | 1989 | Zaccaria / Mr Game | motrshow | motrshow | genpin |
| motrshowb | Motor Show (set 3) | 1989 | Zaccaria / Mr Game | motrshow | motrshow | genpin |
| mouja | Mouja (Japan) | 1996 | Etona | | | |
| mouncrst | Moune Creste (Jeutel French bootleg of Moon Cresta) | 1980? | bootleg (Jeutel) | mooncrst | mooncrst | |
| mountmon | Mountain Money (0100294V, NSW/ACT) | 1996 | Aristocrat | aristmk5 | | |
| mountmona | Mountain Money (0100289V, NSW/ACT) | 1996 | Aristocrat | mountmon | mountmon | |
| mountmonce | Mountain Money - Cash Express (AHG1629, US) | 2001 | Aristocrat | mountmon | mountmon | |
| mountmonu | Mountain Money (BHG1465, US) | 2001 | Aristocrat | mountmon | mountmon | |
| mountmonua | Mountain Money (BHG1464, US) | 2001 | Aristocrat | mountmon | mountmon | |
| mouseatk | Mouse Attack | 1996 | ICE | | | |
| mouser | Mouser | 1983 | UPL | | | |
| mouserc | Mouser (Cosmos) | 1983 | UPL (Cosmos license) | mouser | mouser | |
| mousn_l1 | Mousin' Around! (LA-1) | 1989 | Bally | mousn_l4 | mousn_l4 | genpin |
| mousn_l4 | Mousin' Around! (LA-4) | 1989 | Bally | | | genpin |
| mousn_lu | Mousin' Around! (LU-1) | 1989 | Bally | mousn_l4 | mousn_l4 | genpin |
| mousn_lx | Mousin' Around! (LX-1) | 1989 | Bally | mousn_l4 | mousn_l4 | genpin |
| moviecrd | Movie Card | 1998 | Golden Games / C+M Technics AG | | | |
| movmastr | Movie Masters | 19?? | Jac Van Ham (Royal) | | | genpin |
| mp_bio | Bio-hazard Battle (Mega Play) | 1993 | Sega | megaplay | | |
| mp_col3 | Columns III (Mega Play) | 1993 | Sega | megaplay | | |
| mp_gaxe2 | Golden Axe II (Mega Play) (Rev B) | 1993 | Sega | megaplay | | |
| mp_gaxe2a | Golden Axe II (Mega Play) | 1993 | Sega | mp_gaxe2 | mp_gaxe2 | |
| mp_gslam | Grand Slam (Mega Play) | 1993 | Sega | megaplay | | |
| mp_gunhe | Gunstar Heroes (Mega Play) | 1993 | Sega | megaplay | | |
| mp_mazin | Mazin Wars / Mazin Saga (Mega Play) | 1993 | Sega | megaplay | | |
| mp_shnb3 | Shinobi III (Mega Play) | 1993 | Sega | megaplay | | |
| mp_soni2 | Sonic The Hedgehog 2 (Mega Play) | 1993 | Sega | megaplay | | |
| mp_sonic | Sonic The Hedgehog (Mega Play) | 1993 | Sega | megaplay | | |
| mp_sor2 | Streets of Rage II (Mega Play) | 1993 | Sega | megaplay | | |
| mp_twcup | Tecmo World Cup (Mega Play) | 1993 | Sega | megaplay | | |
| mp110 | Newton MessagePad 110 | 1994 | Apple Computer | | | |
| mp120 | Newton MessagePad 120 | 1995 | Apple Computer | | | |
| mp1210 | MP1210 DAC | | | | | |
| mp130 | Newton MessagePad 130 | 1996 | Apple Computer | | | |
| mp2000 | Newton MessagePad 2000 | 1997 | Apple Computer | | | |
| mp2100 | Newton MessagePad 2100 | 1997 | Apple Computer | | | |
| mp68a | mp68a | 1979 | Didact AB | | | |
| mpang | Mighty! Pang (Europe 001010) | 2000 | Mitchell (Capcom license) | | | |
| mpanga | Mighty! Pang (Asia 001010) | 2000 | Mitchell (Capcom license) | mpang | mpang | |
| mpangj | Mighty! Pang (Japan 001011) | 2000 | Mitchell (Capcom license) | mpang | mpang | |
| mpangr1 | Mighty! Pang (Europe 000925) | 2000 | Mitchell (Capcom license) | mpang | mpang | |
| mpangu | Mighty! Pang (USA 001010) | 2000 | Mitchell (Capcom license) | mpang | mpang | |
| mpatrol | Moon Patrol | 1982 | Irem | | | |
| mpatrolw | Moon Patrol (Williams) | 1982 | Irem (Williams license) | mpatrol | mpatrol | |
| mpc10 | MPC-10 / Wavy10 (MSX1, Japan) | 1983 | Sanyo | | | |
| mpc100 | MPC-100 (MSX1, UK) | 1985 | Sanyo | | | |
| mpc105 | Motorola MPC105 | | | | | |
| mpc106 | Motorola MPC106 PCI Bridge/Memory Controller | | | | | |
| mpc1600 | MPC 1600 | 1982 | Columbia Data Products | ibm5150 | ibm5150 | |
| mpc200 | MPC-200 (MSX1, UK) | 1985 | Sanyo | | | |
| mpc200sp | MPC-200SP (MSX1, Spain) | 1985 | Sanyo | mpc200 | mpc200 | |
| mpc2300 | MPC-2300 (MSX2, USSR) | 1987 | Sanyo | | | |
| mpc2500f | MPC-2500FD (MSX2, USSR) | 1987 | Sanyo | | | |
| mpc25fd | MPC-25FD (MSX2, Japan) | 1985 | Sanyo | | | |
| mpc25fs | MPC-25FS (MSX2, Japan) | 1985 | Sanyo | | | |
| mpc27 | MPC-27 (MSX2, Japan) | 1985 | Sanyo | | | |
| mpc3000 | MPC-3000 | 1994 | Akai / Roger Linn | | | |
| mpc60 | MPC60 MIDI Production Center | 1987 | Akai Electric | | | |
| mpc64 | MPC-64 (MSX1, Germany) | 1985 | Sanyo | | | |
| mpc800 | MasterPieCe 800 Series | 1987 | G2 Systems | bbcm | bbcm | bbc |
| mpc8240 | IBM PowerPC MPC8240 | | | | | |
| mpc900 | MasterPieCe 900 Series | 1988 | G2 Systems | bbcm | bbcm | bbc |
| mpc900gx | MasterPieCe 900GX Series | 1990 | G2 Systems | bbcm | bbcm | bbc |
| mpcb030 | EDGE-2 Processor f/1 or 2 1Mp-FB's | | | | | |
| mpcb828 | EDGE-1 Graphics f/1 1Mp Monitor (55K/60) | | | | | |
| mpcb849 | EDGE-1 Graphics f/1 2Mp Monitor (55K/60) | | | | | |
| mpcb896 | EDGE-2/Plus Frame Buffer f/2Mp Monitor (V-60) | | | | | |
| mpcb963 | 2000 Graphics f/1 1Mp Monitor | | | | | |
| mpcba63 | EDGE-2 Frame Buffer f/1Mp Monitor (55K/60) | | | | | |
| mpcba79 | 2000 Graphics f/2 1Mp Monitors | | | | | |
| mpcbb68 | GT II Graphics f/1 1Mp Monitor (V-76) | | | | | |
| mpcbb92 | GT II Graphics f/1 2Mp Monitor (V-60/76) | | | | | |
| mpcc | Rockwell MPCC | | | | | |
| mpcc68560 | MPCC 68560 | | | | | |
| mpcc68560a | MPCC 68560A | | | | | |
| mpcc68561 | MPCC 68561 | | | | | |
| mpcc68561a | MPCC 68561A | | | | | |
| mpchoice | Player's Choice (M4C1) | 1983 | Merit | pitboss | pitboss | |
| mpchoicea | Player's Choice (M3C1) | 1982 | Merit | pitboss | pitboss | |
| mpf_exp | Micro-Professor Expansion Slot | | | | | |
| mpf1 | Micro-Professor 1 | 1981 | Multitech | | | |
| mpf1_88 | Micro-Professor I/88 | 1985 | Multitech | | | |
| mpf1_epb | Multitech EPB-MPF (Eprom Programmer Board) | | | | | |
| mpf1_epb_ibp | Multitech EPB-MPF-IBP (Eprom Programmer Board) | | | | | |
| mpf1_iom_ip | Multitech IOM-MPF-IP (I/O and Memory Board) | | | | | |
| mpf1_prt | Multitech PRT-MPF (Printer) | | | | | |
| mpf1_prt_ip | Multitech PRT-MPF-IP (Printer) | | | | | |
| mpf1_sgb | Multitech SGB-MPF (Sound Generation Board) | | | | | |
| mpf1_ssb | Multitech SSB-MPF (Speech Synthesizer Board) | | | | | |
| mpf1_tva_ip | Multitech TVA-MPF-IP (Video Board) | | | | | |
| mpf1_vid | Bardehle VIDEO-MPF-I (Video Board) | | | | | |
| mpf1b | Micro-Professor 1B | 1982 | Multitech | mpf1 | mpf1 | |
| mpf1p | Micro-Professor 1 Plus | 1983 | Multitech | | | |
| mpf2 | Microprofessor II | 1982 | Multitech | tk2000 | tk2000 | |
| mplanets | Mad Planets | 1983 | Gottlieb | | | |
| mplanetsuk | Mad Planets (UK) | 1983 | Gottlieb (Taitel license) | mplanets | mplanets | |
| mpoker2 | Major Poker 2 (set 1) | 199? | PAL Systems | | | |
| mpoker2a | Major Poker 2 (set 2) | 199? | PAL Systems | mpoker2 | mpoker2 | |
| mpoker2b | Major Poker 2 (set 3) | 199? | PAL Systems | mpoker2 | mpoker2 | |
| mprof3 | Microprofessor III | 1983 | Multitech | apple2e | apple2e | |
| mps1000 | MPS-1000 Printer | 1986 | Commodore Business Machines | | | |
| mps1200 | Commodore MPS-1200 Dot Matrix Printer | | | | | |
| mps1230 | MPS-1230 NLQ Printer | 1988 | Commodore Business Machines | | | |
| mps1250 | Commodore MPS-1250 Dot Matrix Printer | | | | | |
| mps65 | MPS-65 | 1984 | Thaler | | | |
| mpt02 | Victory MPT-02 Home TV Programmer (Austria) | 1978 | Soundic | studio2 | studio2 | |
| mpt02h | MPT-02 Jeu TV Programmable (France) | 1978 | Hanimex | studio2 | studio2 | |
| mpt05 | MPT-05 | 1980 | ITMC | | | |
| mpu_pc98 | Roland MPU-401 MIDI Interface (C-bus) | | | | | |
| mpu1000 | MPU-1000 | 1979 | Acetronic | 1292apvs | 1292apvs | |
| mpu2000 | MPU-2000 | 1979 | Acetronic | 1292apvs | 1292apvs | |
| mpu401 | Roland MPU-401 I/O box | | | | | |
| mpu4chrboot_blast | MPU4 bootleg Characteriser (Bank A Blast) | | | | | |
| mpu4chrpal | Barcrest MPU4 Characteriser PAL | | | | | |
| mpu4chrpal_bwb | BWB MPU4 Characteriser PAL | | | | | |
| mpu4okisnd | Barcrest Sampled Sound Program Card | | | | | |
| mpu9088vf | MPU-9088-VF | 198? | MY-COM | ibm5150 | ibm5150 | |
| mpumpkin | Magical Pumpkin: Puroland de Daibouken (Japan 960712) | 1996 | Capcom | | | |
| mpx16 | MPX-16 | 198? | Micromint | ibm5150 | ibm5150 | |
| mpz80 | MPZ80 | 1980 | Morrow Designs | | | |
| mquake | Moonquake | 1987 | Sente | | | |
| mr61 | MR-61 Workstation | 1996 | Ensoniq | | | |
| mrangbat | Let's! TV Play Mahou Taiketsu Magiranger - Magimat de Dance & Battle (Japan) | 2005 | Bandai / SSD Company LTD | | | |
| mranger | Moon Ranger (bootleg of Moon Patrol) | 1982 | bootleg | mpatrol | mpatrol | |
| mratlus | Mr. Altus Tele Brain | 1983 | H.G.S. | plldium | plldium | |
| mrblack | Mr. Black (set 1) | 1984 | Taito do Brasil | | | genpin |
| mrblack1 | Mr. Black (set 2) | 1985 | Taito do Brasil | mrblack | mrblack | genpin |
| mrblkz80 | Mr. Black (Z-80 CPU) | 198? | Taito do Brasil | mrblack | mrblack | genpin |
| mrchalgr | Mr. Challenger (US) | 1979 | Texas Instruments | | | |
| mrdig | Mr. Dig | 2000 | Sun | | | |
| mrdo | Mr. Do! | 1982 | Universal | | | |
| mrdobl | Mr. Do! (bootleg) | 1982 | bootleg | mrdo | mrdo | |
| mrdofabr | Mr. Do! (Fabremar bootleg) | 1982 | bootleg (Fabremar) | mrdo | mrdo | |
| mrdofix | Mr. Do! (bugfixed) | 1982 | Universal (Taito license) | mrdo | mrdo | |
| mrdot | Mr. Do! (Taito) | 1982 | Universal (Taito license) | mrdo | mrdo | |
| mrdoy | Mr. Do! (prototype) | 1982 | Universal | mrdo | mrdo | |
| mrdrillr | Mr. Driller (US, DRI3/VER.A2) | 1999 | Namco | | | |
| mrdrillrja2 | Mr. Driller (Japan, DRI1/VER.A2) | 1999 | Namco | mrdrillr | mrdrillr | |
| mrdrilr2 | Mr. Driller 2 (World, DR22 Ver.A) | 2000 | Namco | | | |
| mrdrilr2_decrypter | Mr Driller 2 decrypter | | | | | |
| mrdrilr2j | Mr. Driller 2 (Japan, DR21 Ver.A) | 2000 | Namco | mrdrilr2 | mrdrilr2 | |