Earth is dead. At least it seems so. Alien ships hover over a frozen world. You're inside a Cold War bunker with one mission: launch the ICBM and destroy the ship above.

Drill through voxel terrain to search for metal, plastics, components, and coal. Every resource has more than one use and you have to decide what to upgrade, craft, or repair. Do you make grenades or feed the generator instead? Search for keys or for blueprints. These will unlock new toys for your next run, when inevitably ICBM explodes. 

But you're not alone down there. Former miners, transformed by the aliens, wander the deep underground tunnels. Your steps are loud. Your drill however is louder. 

The aliens send waves of creatures to destroy your ICBM. Switch between turrets using CRT monitors — machine guns, lasers, missile launchers, railguns, and more. Aim, fire, switch to the next. Upgrade between waves. If the ICBM goes down, so do you. 

Coal fuels the generator, and the generator runs everything — turrets, lights, radar, the feeds you fight through. Let it burn out and the bunker goes dark and defenseless.

Low on coal? Something gives. Cut the turrets or the lights to save fuel — and lose an edge. Run at full power instead, and that's coal you're not spending on crafting.

Fuel or firepower. The bunker only holds so much.

Every resource has more than one use. Are you going to spend them on upgrades, repairs, fuel, or on crafting tools? To survive the depths you will need flares, glow sticks, electric lights, grenades and much more. You can't have all of it. Pick carefully.

Find two launch keys hidden deep underground. Insert both, survive the final wave and fire the missile. Then move to the next bunker and do it again.

Each bunker hides its own equipment blueprints. Find them to unlock new drills, turrets, and defenses. Before each run, pick your loadout from what you've unlocked.

• First-person digging game with tower defense and roguelike elements

• Drill through fully destructible voxel terrain

• Stress-based procedural enemy waves 

• Control turrets through CRT monitors during waves

• Find blueprints to unlock new equipment between runs

• Hand-built bunkers with procedural underground sections

• Crafting system for exploration and digging

• Cold War / cassette-futurism setting — concrete, CRT screens, analog switches

• Inspired by Dome Keeper, Deep Rock Galactic, Amnesia:The Bunker, Alien (1979), and Metro 2033