ImpKeep

Browser · 3D · in development

Dig deep.
Build well.
Hold the heart.

You are the thing under the mountain. Carve tunnels out of solid rock, raise the rooms that keep your dungeon alive, and put every imp and warrior you own between the monsters and the Dungeon Heart.

Enter the dungeon (opens in a new tab) See how it plays

Runs in the browser No install

11
room types
4
difficulties
11
kinds of invader
0 MB
to download
Runs in any modern browser Never pay-to-win Weekly leaderboards Progress saved to your account

How a run plays

Four steps, one Heart to hold

  1. Dig
  2. Build rooms
  3. Raise units
  4. Hold the waves

The rooms

Every room is a trade-off you make with gold you do not have yet

There is no filler here. Each room type does one specific thing, and building the wrong one early is a real setback rather than a cosmetic mistake.

Every room in the guide

Treasury · 10g

Stores gold. Without it, everything your imps mine has nowhere to go.

Lair · 18g

+2 to your maximum imp count per tile. More hands, more rock cleared.

Hatchery · 22g

New imps arrive faster, so losses during a wave hurt less.

Library · 26g

+0.6 mana per second per tile — the resource everything advanced runs on.

Training Room · 30g

+1 warrior training slot. Turning gold into soldiers takes space.

Barracks · 34g

Rally point and warrior training. You need at least one, and you will want it early.

Forge · 28g

+25% imp dig speed per tile. Pays for itself in rock, not in gold.

Ossuary · 27g

+0.5 gold per tile for every monster killed while it stands.

Watchtower · 32g

Warriors and heroes near it spot monsters from farther away.

Prison · 30g

A monster that falls on it is captured at 1 HP instead of destroyed.

Torture Chamber · 34g

Carry a captive here with the Hand to extract a reward.

Upgrades

Rooms level up, and neighbouring tiles of the same type raise the multiplier together.

The roster

Your keepers of the dark. Their monsters at the door.

Imps dig, warriors hold the line, heroes turn a siege. Every wave, the mountain answers with something worse.

Imp

Digger

Warrior

Defender

Hero

Champion

Grunt

Invader

Stalker

Invader

Brute

Invader

What makes it a game

The parts that punish autopilot

Heroes

A rare unit that earns XP and levels through a run, and lands a cleave attack no warrior has. Losing one is a different kind of loss than losing a recruit.

Veterancy

Warriors rank up from kills — Recruit, Veteran, Elite — on top of whatever your barracks level gave them at hire. The room sets the floor, the fighting sets the rest.

Wave design

Grunts give way to faster Stalkers and Runners, then ranged Slingers, door-breaking Sappers, imp-hunting Thieves and Brutes that soak everything you throw at them. Boss waves land on a fixed interval, escorted and scaled the same way a normal wave would be.

Payday

Imps and warriors draw wages on a timer. Miss one because the treasury is empty and somebody walks out of your dungeon.

Mission objectives

Each run has a stated goal and a win condition, not just an indefinite survival timer that ends when you get bored.

Spells

The mana your libraries generate is what you cast with — direct interventions from your own hand, when warriors and walls are not going to be enough on their own.

Achievements

Lifetime stats and achievements persist between runs, so a disastrous game still moves something forward.

Straight from the game

Turn it over yourself

These are not renders or marketing shots — real glTF exports, rendered with the same lighting rig and the same renderer the game uses, loaded on demand. Drag to rotate. Every model here except Overlord's Hand and the Command Rune is the exact one running in your session mid-game — those two tools stay 2D cursor icons in the game itself by design, and are shown here as art only.

The viewer only downloads once you scroll to it, and the page works perfectly well if it never loads at all.

An interactive 3D model of the imp loads here. It needs WebGL — if your browser or connection says no, you are not missing any information, only the toy.

Waves repelled, everyone's clock

Leaderboard

Top 5

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The Heart does not defend itself

It runs in the tab you already have open. Nothing to install, nothing to sign up for.

Enter the dungeon (opens in a new tab)