| Abbreviation | Definition |
|---|---|
| COB | Cult Of Bud |
| COBEN | Chance Of Being Eliminated Next |
| COBS | Crusty Old Brown Stuff |
| COC | Church Of Clancy |
| COC | Clash Of Clans |
| COD | Call of Duty |
| COD | Children Of Dune |
| CODMW | Call Of Duty - Modern Warfare |
| CODP | Call Of Duty Player |
| COF | Chains Of Freedom |
| COFD | Chronicles of Darkness |
| COG | Competitive Online Gaming |
| COGS | Complete Online Gaming System |
| COLS | Citadel Of Laptop Splitting |
| COM | Chain Of Memories |
| COS | Chamber Of Secrets |
| COS | Conqueror Of Shamballa |
| COSIGN | CCG Open Source Internet Gaming Network |
| COTM | Cheater Of The Month |
| COV | Citadel Of Void |