- Race War Kingdoms
- Racing Star: Come On Baby
- Ragnarok Online
- Rakion
- Ran Online
- RanchStars
- Rangers Land
- Rappelz
- Rappelz Arabic version
- Realm Wars
- Realms of Loria
- Realms of the Dragon
- RealMUD
- Red Stone
- Regnum Online
- Reign of Blood
- Renaissance Kingdoms
- Requiem: Bloodymare
- Return of Warrior
- RF Online
- Rise of Empire
- Rise of Terror
- Roblox
- Robo Rescue
- Robostrike
- Robot Rage
- RockFREE
- Rogue Vampires
- Rohan
- Rohan: Blood Feud
- Rose Online
- Roto X
- RPG World
- Rubies of Eventide
- Rumble Fighter
- Runes Of Magic
- Runescape
- RuneScape Online Miniclip
- RYL2: Incomplete Union
List Of Multiplayer Online games 123 R (Text)
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