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13762 companies

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Companies (236)Years of activities
 O Donoghue, J.D. O [Brooklyn, NY, USA]
        1883 
 O&T Soft
        1993 
 O'Meara, John U. [Washigton, DC, USA]
1889 to 1890 
 O'Shaughnessy, Lawrence
        1991 
 O-Letto Novelty Co.
 
 O-Shea, Kevin
        1986 
 O3 Ent.
2004 to 2006 
 OAK [Japan]
        1983 
 Oak Computers
        1988 
 Oak Mfg. Co., Inc. [Culver City, CA, USA]
1947 to 1956 
 Oak Solutions
1991 to 1994 
 Oakland Novelty Co. [Oakland, CA, USA]
        1902 
 Oakleaf
 
 Oakley, Jason
        2000 
 Oasis Soft.
1982 to 1985 
 OB Machine Co. [Portland, OR, USA]
        1927 
 OBA, Inc. [Dallas, TX, USA]
 
 Oberheim
 
 Oberlander [F├╝rth, Germany]
        1905 
 Obradovic, Dragoljub
        1988 
 Obsessed Maniacs, The
1993 to 1995 
 Obunsha
        1995 
 OCC
        1996 
 Ocean Europe, Ltd.
1991 to 1998 
 Ocean IQ [Ocean Soft. label]
1985 to 1986 
 Ocean Soft., Ltd.
1983 to 1999 
 Ocean State Publishing Corp.
        1995 
 Ocean Studios
        1990 
 Octagon Ent. [Japan]
 
 Octasoft
1986 to 1987 
 Octavian Italy srl [Bussolengo, VR, Italy]
2001 to 2010 
 Octek
1992 to 1994 
 OCTOCOM
2004 to 2007 
 Oddworld Inhabitants, Inc.
        2020 
 Odesta Soft.
        1982 
 Odiesoft
1994 to 1995 
 Odin Computer Graphics
1985 to 1987 
 Odrex [Odessa, Ukraine]
 
 Odyssey
        1991 
 OEC [Omori Electric Co., Ltd.] [Japan]
1979 to 1983 
 Oeil de Lynx, L'
        1984 
 OEM
        1983 
 OES Corp.
 
 OFA [Paris, France]
 
 Office Create [Japan]
1994 to 2010 
 Office Koukan [Japan]
        1991 
 Ofites Informatica
        1984 
 Ogden & Co. [Chicago, IL, USA]
1897 to 1901 
 Oguchin
        1992 
 Oh! Business
        1988 
 Ohio Amusement Co. [Columbus, OH, USA]
        1944 
 Ohio Automatic Machine Co. [Cincinnati, OH, USA]
        1930 
 Ohio Match Co. [OH, USA]
 
 Ohio Scientific
1978 to 1980 
 Ohio Specialty Co. [Cincinnati, OH, USA]
1935 to 1949 
 Ohio Vending Machine Co. [Columbus, OH, USA]
1930 to 1934 
 Ohira Giken Industry Co., Ltd. [Japan]
1985 to 2005 
 OHMCO Inc. [New Mexico, USA]
 
 Ohnishi, Hiroshi
        1982 
 OIC
 
 OIC Co. [Chicago,. IL, USA]
        1916 
 Oizumi
2001 to 2017 
 Oizumi Amuzio [Japan]
2017 to 2018 
 OK [Japan]
2014 to 2017 
 OK Corp.
        1985 
 OK Mfg. [Salt Lake City, UT, USA]
2006 to 2007 
 Okapi
        1981 
 Okazaki Sangyo Co., Ltd. [Japan]
1991 to 2012 
 Oksan
        1992 
 Okta
        1987 
 Okumura [Japan]
1972 to 2015 
 Okumura Yuki Co., Ltd. [Japan]
2008 to 2011 
 Okumurayuuki Corp. [Japan]
        2011 
 Old Oak Den
2018 to 2019 
 Olde N.Y. Amusement Factory [USA]
 
 OlderGames
2002 to 2007 
 Oldroyd & Gabryelski
        1980 
 Oliver, Thomas [Chicago, IL, USA]
        1908 
 Oliver, William S. [London, England]
        1887 
 OliverP
2011 to 2016 
 Olivetti Prodest [Milan, Italy]
1981 to 1990 
 Olivier, Jammes
 
 Olympia [France]
        1983 
 Olympia [Milan, Italy]
1979 to 1983 
 Olympia Co., Ltd. [Japan]
1993 to 2017 
 Olympia International
1981 to 1985 
 Olympic Games Mfg. Co.
 
 Olympic Soft.
        1983 
 Olympic Video Gaming
 
 Omage Micott, Inc.
        2000 
 Omega [Paris, France]
        1937 
 Omega Games
        1985 
 Omega Micott
2000 to 2002 
 Omega Microware
        1983 
 Omega Project Co., Ltd. [Japan]
        2002 
 Omega Soft.
1983 to 1986 
 Omega System
1986 to 1999 
 Omen Soft.
        1984 
 Omiya Soft
1997 to 1998 
 OMK Soft. [Spain]
1985 to 1990 
 Omni
1980 to 1989 
 Omni Soft.
        1984 
 Omnitrend
1984 to 1987 
 Omnium
        1997 
 On Three, Inc.
1985 to 1987 
 On-Line Design, Inc.
 
 On-line Ent., Ltd.
1991 to 1992 
 On-Line Systems [Renamed Sierra On-Line in 1982]
1980 to 1982 
 Onaki
        1986 
 Once Product
        1991 
 OnDiMand
        1997 
 One-Cent Amusement Co. [Camden, NJ, USA]
        1929 
 One-Use Toothbrush Corp. [Van Nuys, CA, USA]
 
 OneTouch Technology, Ltd.
 
 Oneway
1988 to 1994 
 Ong Tat-Wee, David
        1994 
 Ongakukan
1995 to 2001 
 Onion House [Japan]
        1994 
 Onko Electronics Co., Ltd. [Nagasaki, Japan]
        1982 
 OnLine [Russia]
        1992 
 Onoe Network
 
 Onslaught
1985 to 2018 
 Onuma Denki Shoukai [Japan]
 
 Ookuroya
        1989 
 OPC Soft. [Japan]
 
 Open Book 9003
        1996 
 Open Corp.
        1993 
 Open E&C [Korea]
        2003 
 Open University, The
        1984 
 Oper-Video
        2000 
 Opera Soft. [Spain]
1986 to 1991 
 Operamatic [Spain]
        1980 
 Operations Research Office
1953 to 1962 
 Operator's Piano Co. [Chicago, IL, USA]
        1920 
 Operators Guide
 
 Operators Supply Co.
 
 Operators Vending Machine Supply Co. [Los Angeles, CA, USA]
1932 to 1939 
 Opitz, Erich [Berlin, Germany]
        1939 
 OPlayer
 
 Opportunities For Learning
 
 Opt. 1 [Japan]
1990 to 1992 
 Optima
        1983 
 Optimum Resource
1982 to 1989 
 Optonica
        1999 
 Optyx Soft.
1986 to 1987 
 Opus
        1983 
 Opus Ent., Ltd. [Surrey, England]
 
 Ora Soft
1995 to 1996 
 Oracion, Inc. [Japan]
1996 to 1999 
 Orange Cherry
1984 to 1991 
 Orange House [Japan]
1989 to 1994 
 Orange Juice Soft. Systems
        1986 
 Orange Micro
        1984 
 Orange Soft.
1988 to 1989 
 ORB [Japan]
        1993 
 Orb Gaming
        2018 
 Orb1tware
1986 to 1988 
 Orbit
        1984 
 Orbital Media
2005 to 2006 
 Orbs
1991 to 1992 
 Orbyte Soft.
 
 Orca [Japan]
        2010 
 Orca Corp. [Japan]
1981 to 1983 
 Oregan Dev.
        1992 
 Organic Soft.
        1981 
 Organised Solutions, Ltd.
        1988 
 Orient
 
 Oriental Soft Japan
2000 to 2002 
 Oriental Soft, Inc.
        2000 
 Origin Systems, Inc.
1982 to 1998 
 Original Amusements Co. [Southend-on-Sea, England]
        1930 
 Original Game
        1982 
 Original Machine Co.
 
 Original Machine Mfgrs. [Southend, England]
1932 to 1946 
 Orion [Portugal]
        1983 
 Orion Gaming
2005 to 2010 
 Orion Micro Systems
        1989 
 Orion Soft.
1982 to 1986 
 OrionSoft [France]
        2017 
 Orkim Data
 
 Orlitronic [France]
1982 to 1984 
 Orms Mfg. Co. [Dallas, TX, USA]
        1956 
 Orphanware
1986 to 1987 
 Orpheus
1984 to 1986 
 Ortiz Gaming
2014 to 2015 
 Orwin, M.
1981 to 1983 
 Oryx Gaming
 
 OS Soft.
1990 to 1994 
 Osborne Computer Corp.
1981 to 1984 
 Osbourne-McGraw Hill
1983 to 1984 
 Osbrink Games Co. [Chicago, IL, USA]
        1934 
 Osbrink Mfg. Co., R.H. [Chicago, IL, USA]
1933 to 1934 
 Oscar Soft. [Spain]
        1989 
 Osmagyar Soft.
 
 Osmosis Computer
1982 to 1983 
 OSS
1983 to 1986 
 Ostelbische Automaten
        1928 
 Ostjysk Automater
        1979 
 Otaboo
        2003 
 OTM
1995 to 1996 
 Otomate [Japan]
        2018 
 Otomato [Paris, France]
        1936 
 Otrona
1982 to 1983 
 Ottery, Darren
 
 Otto & Sons, F.G. [Jersey City, NJ, USA]
1898 to 1899 
 Otto Wichelhaus
        1930 
 Outer Limits
        1981 
 Outfit7, Ltd.
2010 to 2018 
 Outlaw [Japan]
        1997 
 Outlet [UK]
1987 to 1997 
 Outou Shobou
        1996 
 Outrigger
1995 to 1997 
 Outright Games
        2019 
 Outsiders & NedoPC
        2019 
 Ouyou Densan Giken [Japan]
        1985 
 Overlanders
1989 to 2000 
 Overpriced Soft.
 
 Overton Mfg. Co. [Topeka, KS, USA]
        1902 
 OVL
 
 Owen, Andrew
2002 to 2011 
 Owen, Simon
        2011 
 Owl Soft.
        1985 
 Own-A-Phone
        1987 
 Oxford Computer Publishing
1983 to 1985 
 Oxford Data
        1984 
 Oxford Radio Corp., The
        1930 
 Oxford Softworks
1989 to 1992 
 Oxxi
        1991 
 Oxygen
1990 to 2003 
 Oxygen Games
2003 to 2008 
 Oxyron
1991 to 2012 
 Oyhus, Kim G.S.
        1985 
 OZ Club
1996 to 2000 
 OZ Corp.
 
 Ozi Soft
1984 to 1987 
 Ozzard
        1989