- Mabinogi
- Mafia
- Mafia 1930
- Mafia Death
- Mafia Family
- Mafia Kings
- MageDuel
- Magi Nation: Battle for the Moonlands
- Magic World Online
- Manager Mania
- ManagerZone
- Manga Fighter
- Maple Story
- Marcoland : Survival Meets Destiny
- Marian's World
- Martial Heroes
- Masters of Belial
- Materia Magica
- Mech Quest
- Mech Warfare: Co-op
- Medievia
- MediWar
- Megaten
- Merchant Empires
- Metal Knight Zero
- Metal Knights
- Metin2 Online
- Middle Earth
- Military Mayhem
- Minions of Mirth
- Mir 2: The Legend Continues
- Miscellaneous Games
- Mission Cobra
- Mixm8
- MixMaster
- MLB Dugout Heroes
- Mo Siang
- Mojo Drift
- Mokitown
- Monato Esprit
- Monkey Snowfight
- Monster and Me
- Monsters Game
- Moon Base
- Mortal Online
- Mount & Blade
- MU Online
- Muelsfell: Rise of the Golems
- Multris
- My Football Sim
- MyDivaDoll
- Mytheon
- Mythos
- Myths & Heroes
- Mythwar II
