The mysterious and dark underground world is waiting for you to explore. It is a strategy game. The prosperous civilization was destroyed by a huge explosion, and the remaining humans, elves, and dwarves rebuilt a fortress as a refuge. Those who traveled between these fortresses were equipped with cannons, mercenaries, and arks. This is a sandbox strategy game. The battle uses real-time battle type, huge boundless world map, misty forest, dark underground world, waiting for you to explore.