Game companies starting with letter O

Company nameGamesFoundedLocationWww
Ocean Software 20 1984 Manchester, England  
Omega Software 1      
OPeNBooK 2 1993 Tokyo, Japan  
Optimum Resource 1 1982 Norfolk, CT, USA  
Origin Systems 7 1983 Manchester, NH, USA  
Orion Software 3 1982 United States  
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