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.
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.
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.
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.
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.
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.