| New free MMOs in May 2011: | ||
 Elsword North America Release: Live – May 5, 2011 Subgenre: Sidescrolling action RPG Publisher: Kill3rCombo Developer: KOG |
 Tactical Intervention Europe Release: Closed Beta – May 6, 2011 Subgenre: FPS Publisher: MAYN Interactive Developer: FIXKorea |
 Allods Online Europe Release: Live – May 11, 2011 Subgenre: CRPG Publisher: Gala-Net Developer: Mail.Ru |
 Lucent Heart North America Release: Closed Beta 3 – May 12, 2011 Subgenre: CRPG Publisher: Gamania Developer: PlayCool |
 Troy Online North America Release: Closed Beta – May 13, 2011 Subgenre: CRPG Publisher: ALT1 Games Developer: ALT1 Games |
 Legend of Galasia International Release: Closed Beta – May 16, 2011 Subgenre: CRPG Publisher: Cilly Games Developer: FunYours |
 Heroes of Thessalonica International Release: Pre-launch – May 17, 2011 Subgenre: CRPG Publisher: SgBase Developer: Unspecified |
 Asda 2 International Release: Open Beta – May 19, 2011 Subgenre: CRPG Publisher: GameCampus Developer: MaxOn Soft |
 APB: Reloaded International Release: Open Beta – May 23, 2011 Subgenre: Sandbox action adventure Publisher: GamersFirst Developer: Realtime Worlds |
 Bounty Hounds Online Europe Release: Closed Beta – May 25, 2011 Subgenre: CRPG Publisher: InnoGames Developer: XPEC |
 Three Kingdoms Brawler International Release: Open Beta – May 26, 2011 Subgenre: Brawler Publisher: The9 Interactive Developer: The9 Interactive |
 Faxion Online International Release: Live – May 26, 2011 Subgenre: CRPG Publisher: UTV True Games Developer: UTV True Games |