| Type | Game | Year | Publisher |
|---|
|
| Vending Machine | Orbit | 1901 | Mills Novelty Co. [Chicago, IL, USA] |
|
| Vending Machine | Orbit Jr. | 1901 | Mills Novelty Co. [Chicago, IL, USA] |
|
| Pinball | Orbit [Model 321] | 1972 | Gottlieb & Co., D. [Chicago, IL, USA] |
|
| Apple Macintosh disk | Orbital Mech | 1988 | Studio Zero, Inc. [Dallas, TX, USA] |
|
| Arcade Video game | Orbite | 1979 | Model Racing S.p.a. [Montemarciano, Italy] |
|
| Arcade Video game | Orbs | 1994 | American Sammy Corp. [Torrance, CA, USA] |
|
| Sony PlayStation CD-ROM | Ore! Tomba [Model SLPS-01144] | 1997 | Whoopee Camp |
|
| Sharp MZ-80B type-in | Organ | 1983 | Dempa Shinbunsha [Japan] |
|
| Commodore C64 cass. | Organism | 2018 | Psytronik Soft. |
|
| Tangerine Oric 1 cass. | Oric Flight | 1983 | Tansoft |
|
| Tangerine Oric 1 cass. | Oricmunch | 1983 | Tansoft |
|
| IGS PGM cart. | Oriental Legend | 1997 | IGS Co., Ltd. [International Game System] |
|
| TRS-80 type-in | Orienteering at Jacque's Coulee | 1981 | SoftSide Publications, Inc. |
|
| PLATO soft. | Orthanc | 1975 | Resch & Kemp & Hagstrom |
|
| UNIVAC 1100 Series soft. | Orwell | 1975 | Nitsche, Thomas |
|
| Nintendo Game Boy Cart. | Osawagase! Penguin Boy [Model DMG-PNJ] | 1990 | Natsume, Inc. [Japan] |
|
| Atari 2600 cart. | Oscar's Trash Race [Model CX26101] | 1983 | Atari, Inc. [CA, USA] |
|
| Redemption game (mechanical) | Oscar's Wild Ride | 1995 | Creative Coin Contraptions [Utah, USA] |
|
| DEC PDP-5 soft. | Oscilloscope Symbol Generator [No. 5-23] | 1965 | DECUS [Digital Equipment Computer Users' Society] |
|
| Arcade Video game | Oshaberi Macha Monoshiri Quiz | 1983 | Logitec Co., Ltd. |
|
| SNK Neo-Geo CD | Oshidashi Zintrick [Model ADCD-104] | 1996 | SNK Corp. [Shin Nihon Kikaku] [Japan] |
|
| Data General Nova soft. | Ostrich | 1971 | Arnold & Newborn |
|
| Data General Nova soft. | Ostrich Ver.4 | 1978 | Arnold & Newborn |
|
| Nintendo Super Famicom cart. | Osu!! Karate-bu [Model SHVC-OJ] | 1994 | Culture Brain |
|
| Thomson TO7 type-in | Othello | 1984 | Shift Editions [Paris, France] |
|
| Arcade Video game | Otomedius | 2007 | Konami Digital Ent. Co., Ltd. |
|
| Commodore C64 disk | Oubliette | 1983 | Aviva Soft. |
|
| PLATO soft. | Oubliette | 1977 | Schwaiger, Jim |
|
| Atari 2600 cart. | Out of Control [Model 50050] | 1983 | Avalon Hill Video Game Co., The [Baltimore, MD, USA] |
|
| Pinball | Out of Sight [Model 366] | 1974 | Gottlieb & Co., D. [Chicago, IL, USA] |
|
| Arcade Video game | Out Run | 1986 | SEGA Enterprises, Ltd. [Tokyo, Japan] |
|
| Sega Chihiro GD-ROM | Out Run 2 [Model GDX-0004] | 2003 | SEGA Corp. |
|
| Sega Mega Drive cart. | Out Run [Model G-4052] | 1991 | SEGA Enterprises, Ltd. [Tokyo, Japan] |
|
| Arcade Video game | Out Runners | 1992 | SEGA Enterprises, Ltd. [Tokyo, Japan] |
|
| Arcade Video game | Out Zone [TP-018] | 1990 | Toaplan Co., Ltd. [Tokyo, Japan] |
|
| RCA Studio II cart. | Outbreak | 2013 | Romanow, Lee |
|
| Arcade Video game | Outburst4D | 1995 | Taito Corp. [Japan] |
|
| Atari 400/800 type-in | Outer Space Attack | 1982 | SoftSide Publications, Inc. |
|
| Pinball | Outer Space [Model 322] | 1972 | Gottlieb & Co., D. [Chicago, IL, USA] |
|
| Sega Mega Drive cart. | OutRun 2019 [Model T-44033] | 1993 | SIMS Co., Ltd. [Japan] |
|
| Commodore C64 disk | Outrun Dance Mix | 1988 | Wilson, Mark |
|
| Arcade Video game | Over Drive [Model GX789] | 1990 | Konami Industry Co., Ltd. [Japan] |
|
| Nintendo Famicom cart. | Over Horizon [Model GAM-Z6] | 1991 | Hot-B [Japan] |
|
| SNK Neo-Geo MVS cart. | Over Top | 1996 | ADK Corp. [Japan] |
|
| Sony PlayStation CD-ROM | OverBlood [Model SLPS-00392] | 1996 | Riverhill Soft. [Japan] |
|
| Pinball | OXO | 1973 | Williams Mfg. Co. [Chicago, IL, USA] |
|
| Sony PlayStation 2 DVD-ROM | ØStory [Model SLPM-65002-3] | 2000 | Enix, Ltd. [Japan] |
|
| Nintendo NES cart. | P'radikus Conflict | 1990 | Color Dreams, Inc. [Brea, CA, USA] |
|
| Arcade Video game | P'tooie Louie | 198? | Bally Midway Mfg. Co. [Franklin Park, IL, USA] |
|
| Arcade Video game | P-47 - The Freedom Fighter | 1988 | JALECO Co., Ltd. [Japan] |
|
| Jaleco Mega System 32 cart. | P-47 Aces | 1995 | JALECO Co., Ltd. [Japan] |
|
| Sharp MZ-80K type-in | P.Kun | 1990 | Dempa Shinbunsha [Japan] |
|
| Magnavox Odyssey² cart. | P.T. Barnum's Acrobats! [Model AC9443] | 1982 | Philips Corp. |
|
| Taito NESiCAxLive pack. | P4U - Persona 4 The Ultimax Ultra Suplex Hold | 2013 | Atlus Co., Ltd. [Japan] |
|
| IBM System/370 soft. | PAASLOW | 1977 | Jesen & Truscott & Bierman |
|
| Sega Game Gear cart. | Pac-In-Time | 199? | NAMCO, Ltd. [Japan] |
|
| Arcade Video game | Pac-Land | 1984 | NAMCO, Ltd. [Japan] |
|
| NEC PC-Engine HuCARD | Pac-Land | 1989 | NAMCOT [Japan] |
|
| NEC PC-8001mkIISR cass. | Pac-Land [Model E-G137] | 1985 | Enix, Ltd. [Japan] |
|
| Mattel Intellivision cart. | Pac-Man [Model 70251] | 1983 | Atarisoft [Atari, Inc.] |
|
| Atari 5200 cart. | Pac-Man [Model CX5208] | 1982 | Atari, Inc. [CA, USA] |
|
| NEC PC-6001mkII cass. | Pac-Man [Model DP-1020] | 1984 | Dempa Shinbunsha [Japan] |
|
| Sharp X1 5.25in. disk | Pac-Man [Model DP-3203205] | 1983 | Dempa Shinbunsha [Japan] |
|
| Sharp X1 cass. | Pac-Man [Model DP-3286] | 1983 | Dempa Shinbunsha [Japan] |
|
| Arcade Video game | Pac-Mania | 1987 | NAMCO, Ltd. [Japan] |
