A 1-4 player resources management & engine building board game. Artwork coming from the manga artist Tomohiro Tsugawa.

One day, out of nowhere, the tower descended from the sky.

Rare ores, natural resources, and historical artifacts were discovered one after another, prompting explorers comissioned by the research guild to race to climb the tower.

However, a massive vortex of light appeared directly beneath it, and the tower slowly and silently began to descend into it, collapsing in the process. Believing that the valuable artifacts and resources needed to be recovered before they were lost, the researching guild offered rewards and sent explorers into the tower.

With their own motives hidden in their hearts, the explorers boarded their flying machines.