[Copies of Rules and Ghost Stories] suddenly appear all over the world, and each copy corresponds to a country's mythology system.
- People who enter the dungeon must abide by the rules, and those who violate the rules will be "punished" (death)
- Each time you clear a dungeon, you can obtain the corresponding mythical power.
- Dungeon difficulty level: D level (easy) → C level (difficult) → B level (nightmare) → A level (hell) → S level (myth) → SS level (chaos) → SSS level (ultimate)
