When mysterious earthquakes strike a former trading town, a lone steambot and an unlikely companion go underground to find the cause. You dig through the earth, collecting treasure, uncovering secrets and avoiding traps while fighting a range of creatures, then use what you find to upgrade your gear so you can reach deeper areas.
Tools such as the Hookshot, for swinging over chasms, and the Jet Engine, for flying through caves, open up new routes. The design draws on Metroidvania games. It is single-player with full controller support, suited to players who like exploration, collecting and gradual upgrades.