Level 5 - Megaton Musashi for Nintendo Switch

An Earth stolen by aliens.

In a very ordinary town, there were people who lived a calm and fulfilled life. But they didn't know it was a false peace. The truth to which they were unaware... Earth is already been destroyed...

99.9% of mankind perished by the attack of mysterious alien forces from scape. The enemy was called "Dracters."
Eventually, a large hole was formed in the Earth and terraforming the planet into a suitable for aliens to live. Mankind had no choice but to escape and hide in the shelter. While they do not know when the day will come, they await their comeback...