games starting with O, page 2
Odyssey
| ROM name | odyssey |
| Manufacturer | Silicon Gaming |
| Year | 1998 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 33 |
Odyssey 2 (US)
| ROM name | odyssey2 |
| Manufacturer | Magnavox |
| Year | 1979 |
| Genre | ? |
| Players | ? |
| Status | good |
| Downloads | 2 |
Odyssey 3 Command Center (US, prototype)
| ROM name | odyssey3 |
| Manufacturer | Philips |
| Year | 1983 |
| Genre | ? |
| Players | ? |
| Status | good |
| Downloads | 25 |
Oedo Fight (Japan, Bloodless version)
| ROM name | oedfighta |
| Manufacturer | Kaneko |
| Year | 1994 |
| Genre | Fighter |
| Players | 2 |
| Status | good |
| Downloads | 39 |
Oedo Fight (Japan, Bloodshed version)
| ROM name | oedfight |
| Manufacturer | Kaneko |
| Year | 1994 |
| Genre | Fighter |
| Players | 2 |
| Status | good |
| Downloads | 37 |
Off Road Challenge (v1.00)
| ROM name | offroadc0 |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 30 |
Off Road Challenge (v1.10)
| ROM name | offroadc1 |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 25 |
Off Road Challenge (v1.30)
| ROM name | offroadc3 |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 26 |
Off Road Challenge (v1.40)
| ROM name | offroadc4 |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 26 |
Off Road Challenge (v1.50)
| ROM name | offroadc5 |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 32 |
Off Road Challenge (v1.63)
| ROM name | offroadc |
| Manufacturer | Midway |
| Year | 1997 |
| Genre | Driving |
| Players | 1 |
| Status | good |
| Downloads | 155 |
Off The Charts (Russian)
| ROM name | otchart |
| Manufacturer | WMS |
| Year | 2000 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 29 |
Off the Wall (2-player cocktail)
| ROM name | offtwallc |
| Manufacturer | Atari Games |
| Year | 1991 |
| Genre | Ball & Paddle |
| Players | 2 |
| Status | good |
| Downloads | 29 |
Off the Wall (2/3-player upright)
| ROM name | offtwall |
| Manufacturer | Atari Games |
| Year | 1991 |
| Genre | Ball & Paddle |
| Players | 3 |
| Status | good |
| Downloads | 77 |
Off the Wall (Sente) (10/16/84)
| ROM name | otwalls |
| Manufacturer | Bally/Sente |
| Year | 1984 |
| Genre | Tennis |
| Players | 2 |
| Status | good |
| Downloads | 70 |
Off Your Face (Bellfruit) (Scorpion 4) (set 1)
| ROM name | sc4oyf |
| Manufacturer | BFM |
| Year | 200? |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 23 |
Off Your Face (Bellfruit) (Scorpion 4) (set 2)
| ROM name | sc4oyfa |
| Manufacturer | BFM |
| Year | 200? |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 14 |
Offensive (Spanish bootleg of Scramble)
| ROM name | offensiv |
| Manufacturer | bootleg (Video Dens) |
| Year | 1981 |
| Genre | Shoot-'Em-Up |
| Players | 2 |
| Status | good |
| Downloads | 29 |
Office Yeo In Cheon Ha (version 1.2)
| ROM name | officeye |
| Manufacturer | Danbi |
| Year | 2001 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 66 |
Offroad Thunder
| ROM name | offrthnd |
| Manufacturer | Midway Games |
| Year | 2000 |
| Genre | Driving |
| Players | 1 |
| Status | preliminary |
| Downloads | 54 |
Oh La La (Stella)
| ROM name | st_ohla |
| Manufacturer | Stella |
| Year | 199? |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 32 |
Oh My God! (Japan)
| ROM name | ohmygod |
| Manufacturer | Atlus |
| Year | 1993 |
| Genre | Puzzle |
| Players | 2 |
| Status | good |
| Downloads | 68 |
Oh! Bakyuuun (Japan, OB1/VER.A)
| ROM name | ohbakyuun |
| Manufacturer | Eighting / Raizing / Namco |
| Year | 1999 |
| Genre | Gun |
| Players | 2 |
| Status | good |
| Downloads | 38 |
Oh! Paipee (Japan 890227)
| ROM name | ohpaipee |
| Manufacturer | Nichibutsu |
| Year | 1989 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 71 |
Oigas (bootleg)
| ROM name | oigas |
| Manufacturer | bootleg |
| Year | 1986 |
| Genre | Ball & Paddle |
| Players | 2 |
| Status | good |
| Downloads | 28 |
Oinori-daimyoujin Matsuri
| ROM name | oinori |
| Manufacturer | Sega |
| Year | 2003 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 43 |
Oishii Puzzle Ha Irimasenka
| ROM name | oisipuzl |
| Manufacturer | Sunsoft / Atlus |
| Year | 1993 |
| Genre | Miscellaneous |
| Players | 2 |
| Status | good |
| Downloads | 85 |
Ojanko Club (Japan, Program Ver. 1.2)
| ROM name | ojankoca |
| Manufacturer | V-System Co. |
| Year | 1986 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 28 |
Ojanko Club (Japan, Program Ver. 1.3, set 1)
| ROM name | ojankoc |
| Manufacturer | V-System Co. |
| Year | 1986 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 42 |
Ojanko Club (Japan, Program Ver. 1.3, set 2)
| ROM name | ojankocb |
| Manufacturer | V-System Co. |
| Year | 1986 |
| Genre | Mahjong |
| Players | 1 |
| Status | good |
| Downloads | 32 |
Ojanko High School (Japan)
| ROM name | ojankohs |
| Manufacturer | V-System Co. |
| Year | 1988 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 37 |
Ojanko Yakata (Japan)
| ROM name | ojankoy |
| Manufacturer | V-System Co. |
| Year | 1986 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 36 |
Ojanko Yakata 2bankan (Japan)
| ROM name | ojanko2 |
| Manufacturer | V-System Co. |
| Year | 1987 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 140 |
Ojousan (Japan 870108, medal)
| ROM name | ojousanm |
| Manufacturer | Nichibutsu |
| Year | 1987 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 38 |
Ojousan (Japan 871204)
| ROM name | ojousan |
| Manufacturer | Nichibutsu |
| Year | 1987 |
| Genre | Mature |
| Players | 1 |
| Status | good |
| Downloads | 60 |
Okeah-240
| ROM name | okean240 |
| Manufacturer | <unknown> |
| Year | 1986 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 23 |
Okhota
| ROM name | okhota |
| Manufacturer | bootleg (Elektronika) |
| Year | 1989 |
| Genre | ? |
| Players | ? |
| Status | good |
| Downloads | 28 |
Oki MSM6222B-01 LCD Controller
| ROM name | msm6222b01 |
| Manufacturer | ? |
| Year | ? |
| Genre | ? |
| Players | ? |
| Status | N/A |
| Downloads | 6 |
Old Coney Island!
| ROM name | coneyis |
| Manufacturer | Game Plan |
| Year | 1979 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 41 |
Old Timer (Barcrest) (Dutch) (MPU4) (DOT 1.1)
| ROM name | m4oldtmr |
| Manufacturer | Barcrest |
| Year | 199? |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 32 |
Oli Bug (bootleg of Jump Bug)
| ROM name | olibug |
| Manufacturer | bootleg |
| Year | 1982 |
| Genre | Platform |
| Players | 2 |
| Status | preliminary |
| Downloads | 42 |
Oli-Boo-Chu (USA)
| ROM name | olibochu |
| Manufacturer | Irem (GDI license) |
| Year | 1981 |
| Genre | Maze |
| Players | 2 |
| Status | good |
| Downloads | 65 |
Olimpic Hockey (EM Bubble Hockey, set 1)
| ROM name | olihockey |
| Manufacturer | Inor |
| Year | 1985 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 35 |
Olimpic Hockey (EM Bubble Hockey, set 2)
| ROM name | olihockeya |
| Manufacturer | Inor |
| Year | 1985 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 22 |
Olivetti L1 M20
| ROM name | m20 |
| Manufacturer | Olivetti |
| Year | 1981 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 44 |
Olivetti L1 M40
| ROM name | m40 |
| Manufacturer | Olivetti |
| Year | 1981 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 34 |
Olivetti L1 M44
| ROM name | m44 |
| Manufacturer | Olivetti |
| Year | 1986 |
| Genre | ? |
| Players | ? |
| Status | preliminary |
| Downloads | 40 |
Olivetti M20 8086 Adapter
| ROM name | m20_8086 |
| Manufacturer | ? |
| Year | ? |
| Genre | ? |
| Players | ? |
| Status | N/A |
| Downloads | 3 |
Olivetti M24 CGA
| ROM name | cga_m24 |
| Manufacturer | ? |
| Year | ? |
| Genre | ? |
| Players | ? |
| Status | N/A |
| Downloads | 6 |
Olivetti M24 Keyboard
| ROM name | m24_kbd |
| Manufacturer | ? |
| Year | ? |
| Genre | ? |
| Players | ? |
| Status | N/A |
| Downloads | 8 |
