ARCADE ROM STRUCTURES
[ 0 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ]
- Off Road Challenge from Midway (1997)
- Off the Wall (2-player cocktail) from Atari Games (1991)
- Off the Wall (2/3-player upright) from Atari Games (1991)
- Off the Wall (Sente) from Bally/Sente (1984)
- Oh My God! (Japan) from Atlus (1993)
- Ohgon no Siro (Japan) from Taito Corporation (1986)
- Oigas (bootleg) from bootleg (1986)
- Oishii Puzzle Ha Irimasenka from Sunsoft + Atlus (1993)
- Ojanko Club (Japan) from V-System Co. (1986)
- Ojanko High School (Japan) from V-System Co. (1988)
- Ojanko Yakata (Japan) from V-System Co. (1986)
- Ojanko Yakata 2bankan (Japan) from V-System Co. (1987)
- Ojousan (Japan 871204) from Nichibutsu (1987)
- Ojousan [BET] (Japan 870108) from Nichibutsu (1987)
- Oli-Boo-Chu from Irem + GDI (1981)
- Olympic Soccer '92 from Seibu (1992)
- Omega from bootleg? (19??)
- Omega Fighter from UPL (1989)
- Omega Fighter Special from UPL (1989)
- Omega Race from Midway (1981)
- Omotesandou (Japan 890215) from ANIME TEC (1989)
- One + Two from Barko (1997)
- One Shot One Kill from <unknown> (199?)
- Oni - The Ninja Master (Japan) from Banpresto/Pandorabox (1995)
- Onna Sansirou - Typhoon Gal (set 1) from Taito (1985)
- Onna Sansirou - Typhoon Gal (set 2) from Taito (1985)
- Opa Opa from Sega (198?)
- Operation Bear from bootleg (1987)
- Operation Thunderbolt (US from Taito America Corporation (1988)
- Operation Thunderbolt (US) from Taito America Corporation (1988)
- Operation Thunderbolt (World) from Taito Corporation Japan (1988)
- Operation Wolf (US) from Taito America Corporation (1987)
- Operation Wolf 3 (US) from Taito America Corporation (1994)
- Operation Wolf 3 (World) from Taito Corporation Japan (1994)
- Orange Club - Maru-hi Ippatsu Kaihou [BET] (Japan 880221) from Daiichi Denshi (1988)
- Orange Club - Maruhi Kagai Jugyou (Japan 880213) from Daiichi Denshi (1988)
- Orbit from Atari (1978)
- Orbitron from Signatron USA (19??)
- Ordyne (Japan) from Namco (1988)
- Oriental Legend / Xi Yo Gi Shi Re Zuang (ver. 105 from IGS (1997)
- Oriental Legend / Xi Yo Gi Shi Re Zuang (ver. 111 from IGS (1997)
- Oriental Legend / Xi Yo Gi Shi Re Zuang (ver. 112 from IGS (1997)
- Oriental Legend / Xi Yo Gi Shi Re Zuang (ver. 112) from IGS (1997)
- Oriental Legend / Xi Yo Gi Shi Re Zuang (ver. 126) from IGS (1997)
- Oriental Legend Super (100 alt) from IGS (1999)
- Oriental Legend Super (100) from IGS (1999)
- Oriental Legend Super (Korea 101) from IGS (1999)
- Osman from Mitchell (1996)
- Othello Derby (Japan) from Sunwise (1995)
- Otona no Mahjong (Japan 880628) from Apple (1988)
- Out Run (Deluxe?) from Sega (1986)
- Out Run (set 1) from Sega (1986)
- Out Run (set 2) from Sega (1986)
- Out Run (set 3) from bootleg (1986)
- Out Zone (set 1) from Toaplan (1990)
- Out Zone (set 2) from Toaplan (1990)
- Outfoxies from Namco (1994)
- Outfoxies (Japan) from Namco (1994)
- Outline from Century Electronics (1982)
- OutRunners (US) from Sega (1992)
- Over Drive from Konami (1990)
- Ozma Wars (set 1) from SNK (1979)
- Ozma Wars (set 2) from SNK (1979)
- Ozon I from Proma (1983)