Gaming Abbreviations and Acronyms
- OELFOriginal European Liver Fibrosis
- OELVNOriginal English Language Visual Novel
- OEMHLOntario East Minor Hockey League
- OESDOpen-Ended Straight Draw
- OFOcean Free
- OFOpposing Force
- OFCOpen Face Chinese
- OFFOnly for Fun
- OFFOmr Favorite Family
- OFFOvernflanders Fields
- OFLCOffice of Film and Literature Classification
- OFLCOffice of Film & Literature Classification
- OGOriginal Gangstaz
- OGOriginal Beneration
- OGOne Grond
- OGOpen Grave
- OGOriginal Gamek
- OGOrigihal Guide
- OGAOnline Gaming Addicts
- OGCOnline Gaming Cheat
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