- Bane Of Sin
- Bang Howdy
- Bang! Howdy
- Banish Land
- Base Zodiac
- BatMUD: The Age of Exiles
- Battle Dawn
- Battle For Wesnoth
- Battle of Phantasia
- Battlecity
- Battlefield Heroes Free MMORPG
- BattleForge Free MMORPG
- BattleKnight
- BB Tanks
- Benign Online
- Beowulf the game
- Beyond Protocol
- BittyBay
- Black Moon Chronicles - Winds Of War Free MMORPG
- Black Prophecy Online
- Blackshot
- Blockland
- Blood Wars
- BoomBang
- Bootleggers
- Booty Master
- Bots Free MMORPG
- BOTS 2
- Bounty Bay Free MMORPG
- Boxing
- Broken Metal
- Bulfleet
- Bushtarion
- BZFlag
List Of Multiplayer Online games 123 B (Text)
B