Your dog buried your homework somewhere underground

Swing a pickaxe at the ground under your house and see what is in it. Fill your bag, haul it up, sell it, buy something better, and go back down further than last time. Ore that was hard at 200 meters breaks on contact by 2,000. The number on your gold counter goes up and does not stop going up.

Reset, and keep what matters

When digging slows down, you prestige. Gold gone, gear gone, world reseeded. What stays is everything you actually built: 40+ talents across eight branches, every ore's mining level and the better prices that come with it, and anything you locked in at the Forge. Melt ore into rainbow bars, spend them, and that upgrade is maxed for the rest of the game, through every reset after it. Then there is Pressure, which is uncapped and makes ore more valuable the deeper you are mining.

Build it however you want

There is no correct route down. Put everything into the pickaxe and break rock by hand. Or ignore the pickaxe, wear the laser helmet, and let the beam eat whatever you have marked. Stack crit chance until every swing sets off a shockwave through the vein. Hunt chests and level all six tiers. The tree has 40+ nodes and you will not buy them all in one run.

27+ Unique Artifacts

Buried at depths that you will naturally discover while exploring the undergrounds. Each one shapes the game in an increasingly chaotic direction and makes your numbers go UP exponentially: candy that cracks the ore next to whatever you hit, gum that throws lightning down the vein, a swarm of nanobots that eats a pocket of rock on its own, a plumbline that drops you thousands of meters in one move. You keep them through every prestige.

The underground is not empty

Rewarding Ancient Caves. Mysterious Cathedrals in the deep rock. 10+ Fossils and 25+ Skins for you to find. Keys that open portals to 5+ other dimensions, each one a timed run for a haul you cannot get any other way. Sandstone deserts and permafrost fields with their own ore, a unique twist and their own ambient.

At 5,000 meters

The ground changes and your pickaxe stops working. There is a way through, and you have to make it yourself.

It has an ending

There is a bottom to this, and a reason you started digging. Finding it does not close the game. The world goes as deep as you have patience for, and people have been past 100,000 meters depth.

Good to know

• Every meter is one you dug yourself. No offline progress.

• Nine languages: English, Deutsch, 简体中文, Русский, Español, Português (BR), 日本語, Français, Polski.

• Five save slots.

• The dog thing is real and it does matter eventually.