| Abbreviation | Definition |
|---|---|
| ROG | Republic of Gaming |
| ROG | Revolution of Gaming |
| ROM | Runes of Magic |
| ROR | Risk Of Rain |
| ROR2 | Risk Of Rain 2 |
| ROTG | Rules of the Game |
| RP | Riot Points (video) |
| RPG | PC Gamer |
| RPG | Really Patient Gaming |
| RPG | Role Playing the Griminus |
| RPGs | Role Playing Games |
| RPST | Rock Paper Scissors Token |
| RQG | Rusty Quill Gaming |
| RRG | Raging Rebel Gaming |
| RS | Reload Shot |
| RS | RuneScape |
| RSBM | Red Sand Black Moon |
| RSCN | RuneScape Cracking Network |
| RSG | Responsible Service of Gaming |
| RSG | Rockstar Games |