Dungeons & Dragons Online (DDO) is a massively multiplayer online role-playing game (MMORPG) developed by Turbine for Microsoft Windows and OS X. DDO was the first Dungeons & Dragons themed online game and successfully replicates the tabletop feel in an MMORPG setting. Dungeons & Dragons Online lets you experience the classic Dungeons & Dragons tabletop game in this action-packed 3D MMORPG.