About This Game

One Million Skeletons is a tower defense roguelite about building a fortress and surviving nine nights of undead attacks. Build and upgrade your defenses, choose relics, and use battlefield abilities to protect the valley's last beacon. Survive long enough to face the Pale King on the ninth night.

Hold the last light for nine nights

Defeated enemies leave bones where they fall. You can process those remains for income, use them as ammunition, or burn them to keep your defenses clear. Left to accumulate, they form ramps that let approaching skeletons climb over your walls.

Build your defenses

Construct ramparts, ballistae, bombards, and support buildings to defend the approaches to your beacon. Eight building types each have three upgrade tiers, giving you different ways to combine firepower, resource production, and control of the battlefield.

At dawn, choose relics that modify your defenses and their interactions. Improve piercing attacks, add freezing effects, or use bone mills to supply your weapons. Choose which road to face next, changing the direction and composition of the incoming attack.

Manage the bones

As the fighting continues, piles of bones change the battlefield. Bone mills turn remains into crowns to fund construction, while marrow-fed ballistae consume them as ammunition. Ember spires clear remains before they build into ramps.

Where enemies die matters. A crowded approach can supply your defenses with resources, but an unmanaged pile can open a route over your ramparts.

Respond during battle

Your weapons attack automatically, while you direct their focus and respond to threats. Concentrate fire on dangerous enemies, reposition an upgraded engine, or open a floodgate to redirect the attackers.

Use Sunfall to strike a priority target, Purge to clear a bone ramp, and Rally to support a damaged wall.

Each wave brings different threats, including fast-moving hounds, armored skeletons, ranged attackers, healers, and giants. Adjust your defenses as the enemy forces grow.

Unlock new ways to play

Surviving nights earns memories that unlock permanent blueprints and six starting doctrines through the Book of Remembrance. Try different approaches across four battlefields, each with terrain that changes how you build your defenses.

After your first victory, take on optional challenges through the Black Litany for increased difficulty and greater rewards.