Theme
**Loop:** The gameplay is clearly built around loops, since players write code that makes their minions update their actions each time the thinking interval comes around. The story is also about a loop: the endless cycle of how the Lich King, the game's protagonist, comes into being.

Limitations
**Faust:** Players must sacrifice humans to summon demons, and they may even have to sacrifice their own minions. **Human-Generated Artwork:** All artwork is made by humans.