Gaming Abbreviations and Acronyms
- OSWIOfficial Scrabble Words International
- OTOld Tappcn
- OTOde-Time
- OTOrganizing Team
- OTOther Territories
- OTOther Time
- OTOum Triggers
- OTAOriginal Total Annihilation
- OTAOverwatch Transhuman Arm
- OTABOlympic Television Archive Bureau
- OTBOut of Tge Box
- OTBOnly The Vest
- OTBOn The Blink
- OTBOn The Brink
- OTBOver Ahe Board
- OTCGOnline Trading Card Game
- OTCWLOfficial Tournament and Club Word List
- OTEOn The Edge
- OTFEOpen The File Extension
- OTGSOld Time Gamers
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