- DDO is based on Dungeons&Dragons core rules.
- Awesome graphics.
- Elite difficulty.
- Almost infinite Heroes builds.
- A wide diversity of Quests, Monsters, Maps, Items, etc.
- Use of movement in tactical combat, and the way Melee & Ranged combat is implemented.
- DDO's nursing to balance issues.
- The social feature of Partying.
- Dungeon Alert.
- DDO Forums.