Key Features
Underroot is an idle survival-crafter about digging deep to keep a doomed village alive one more day. Every layer buys time. Here's what you do with that time, and why each piece pulls its weight when the Maw is at the wall.
Dig to survive
You tunnel downward (underground is down, the surface is home) to pull the materials the village needs out of the earth. Mining isn't a side activity here. It's the whole lifeline. Every wall you raise, every tool you craft, every mouth you feed traces back to the shovel in your hands.
Why you care: the core loop has a reason behind it. You're never grinding for its own sake. You're buying the village another day, and you can feel the depth you've earned.
Hold the line
The Maw, a vast creature, advances from the right and eats the world one wall at a time. You gather, craft, and build to hold it back, then reinforce those walls before they fail. And the threat keeps escalating: the deeper and longer you go, the hungrier it gets.
Why you care: the calm of digging carries a countdown underneath it. Your defenses are only ever enough for now, and that keeps weight on every quiet minute.
Tend the village
Above ground, a village of survivors grows. You feed them, shelter them, and they help you dig on. They're fragile people, and keeping them alive is why the whole enterprise exists.
Why you care: the stakes are human, not a number on a bar. You're defending the people who make the digging worth doing.
A living sky
Weather moves through the world on its own schedule, and it isn't just backdrop. Rain soaks the ground and quickens the digging. Droughts tighten your water and test the village — let one run long and people start to leave, though the drained pond bed hides caches worth diving for. And the aurora lights the night sky with a boon for a village you've kept fed: more coming in, the Maw a little slower, souls a little easier. Your villagers notice all of it, and say so.
Why you care: the world has moods, and they change how you play the day. You read the sky and adjust, instead of running the same loop under a fixed one.
Lineage, not game-over
Death isn't the end. When a digger falls, the lineage continues. The next digger takes up the shovel and digs on, past the graves of those who came before. Sometimes it's their son or their sister; sometimes it's a neighbour, a hunting partner, or an old rival. The village keeps sending someone.
The Line is where they're all kept. Every digger who has held this run is there with what they actually did — the ground they moved, the rituals they fired, how long they lasted, and what finally took them — and you can walk out to any of their graves on the hill.
Why you care: failure is a chapter, not a wall. Losing a digger stings without wiping your run, and the world remembers everyone who dug before you — by name, and by what they got done.
Idle-friendly progression
Underroot keeps working while you're away. Its offline simulation carries the run forward, so you can drop in, make your choices, and step out again with nothing lost for leaving.
Why you care: the game fits a real life. Short sessions and long absences both count, and coming back always means coming back to progress.
The Astrolabe endgame
Dig deep enough and the Astrolabe ritual lets you reshape the world, at a permanent cost. It's a late-game lever for players who'd rather bend their run than just endure it.
Why you care: the endgame hands you a real decision with real consequences, not bigger numbers. You choose what you're willing to pay to change the shape of your world.
Black Hollow
Wren knows a way into Black Hollow, the village the Maw ate before yours. Take his offer and you're down in a dead mine, cutting seam by seam for ore, relics, and things that turn up nowhere else. Every cut is worth more than the last and more likely to be your last. Turn back whenever you want to. Push one tile too far and you climb out with nothing.
Buried down there is how Black Hollow died. Fifteen recovered pages say they dug too greedily, set the rock ringing, and called the thing that ate them. It's the same ringing your own digging makes. They also left behind an unfinished wall that would have held it, and you can finish what they started.
You don't need a run to go. Black Hollow sits on the title screen from the moment you install, no save and no village behind it, nothing at stake but your score.
Why you care: a whole game of nerve inside the bigger one, and the only place the world explains itself.
Challenges and the Artificer's Harrow
For veterans, opt-in Challenges layer new difficulty onto a run. The design-your-own Artificer's Harrow goes further and lets you set the terms of your own hardship.
Why you care: once you've got the loop mastered, you set the rules. The difficulty grows with you instead of running out.
Built to read at a glance
The Talismans HUD carves the interface into instruments that sit where your attention already is: your tool's life and quick travel shortcuts on one side, the village and the day on the other, the Maw's countdown across the top. One key opens the ledger, where everything you're holding, building, and running is laid out on a single sheet. Prefer the classic bars and panels? One toggle in Settings brings them back.
Why you care: the information you need is where you're already looking, so more of your attention stays on the dig.
Room for the whole household
Share a computer? Player profiles keep everyone separate. Pick who's playing from the title screen, and your saves, your digger's look, and your unlock codes are yours alone.
Why you care: one machine, many players, and nobody steps on anyone else's run.
Free, and yours
Underroot is free / name-your-own-price. Play it free in the browser, or download it for PC on Windows and Linux. It never asks for a cent unless you want to give one. No paywalls between you and the game.
Why you care: nothing stands between you and the first dig. Try it in a browser tab, and pay only if it earns it.