$6.99Ad Fundum Dig Deep, Get Rich, Save the World
Drill through a procedurally generated underground in a giant mech, hunting minerals, secrets and a missing father.
Screenshots
The loop that eats your evenings
Drill down, fill your hold with ore, fly back up, sell it all, upgrade, repeat. That is the whole game, and it works. Coal and iron near the surface turn into rarer, pricier minerals the deeper you go, and every sale funds a better drill, a tougher hull or a faster engine. The map is procedurally generated, so each run lays out the underground differently. One more expedition before bed is a real risk: you dig for a vein, spot a richer one two blocks over, and suddenly it is very late. Money solves most problems here, and watching it pile up until the steep early game turns generous is its own reward.
A machine that fights back
Your mech is a handful. It burns fuel with every move, overheats near hot rock and overcools in frozen layers, and its hull takes real damage from falling stones. The control panel becomes a second game: check the gauges, ration the fuel, decide whether one more cargo hold is worth the risk. Then the ground itself shifts. Earthquakes rattle the tunnels, drop rocks on your head and change the terrain, but they also shake loose minerals, and grabbing ore while the world collapses around you is exactly as tempting as it sounds. When the shaking starts, you know the way out: up.
A story buried in the dark
The Great War is over and the Age of Diesel has begun, but peace feels fragile. Your father went into the depths looking for a way to prevent the next one, and vanished. You take over his mining company and follow his trail down. Artifacts from the first human civilization on Earth, remnants of a previous expedition, notes left in the tunnels: the history surfaces piece by piece as you dig, and the mystery keeps pulling you to the next layer. There are NPCs to talk to, hidden vaults to crack, and several endings depending on what you find and choose. The finale lands better than the pixel art lets on.
What else should you know?
How long does a playthrough take?
A focused run to the end takes roughly ten hours, and digging up every upgrade, artifact and secret stretches closer to twenty. Clearing the game also unlocks a new game plus that keeps your upgrades and adds new things to unlock, so the underground keeps giving if you want it to.
Can you set your own difficulty?
Yes. There are several difficulty levels, from easy and balanced to a proper challenge, and you can also customize the settings to taste. The early game is the hardest stretch; once the money starts flowing, things get noticeably more comfortable.
Is the game forgiving if you mess up?
The game saves whenever you return to the surface, which you will do every half hour or so to dodge earthquakes and sell your haul. Stay down too long and lose your mech, and you fall back to your last save, tunnels and all. Careful players rarely lose much.
How does it look and sound?
It is a 2D pixel art game with a retro feel, and each of the eight underground layers has its own visual style, atmosphere and original soundtrack. Descending through the biomes keeps the digging fresh even when the loop stays the same.
