A role-playing nonlinear game.
1. Tomb Robbing: Obtain Skeletons and Skeleton Armor.
2. Summon: resurrect bones.
3. Battle: PK between players' skeletons.
4. Market: free trading skeleton.
5. Occupy: occupy the altar of soul power, absorb soul power alone, and upgrade bones.
6. Recovery: sell low bones, get crystal stones, and recover battle consumption.
7. Equip armor to reduce damage.