Dungeon Keeper was a classic from the 90's. This would have been the game that inspired Overlord.

Well Dungeons is almost an exact copy of Dungeon Keeper 2 and it is out in a few weeks. Here are the system requirements.

Dungeons Minimum system requirements:
o OS: Windows 7/Vista/ XP SP2
o Processor: 2.0 GHz Dual Core
o Memory: 2 GB
o Graphics: 256 MB DirectX 9.0c Graphics card with Shader Model 3.0
o Hard Drive: 2 GB free HDD
o Sound: Windows-compatible Soundcard