Underhollow is a single-player tactical roguelike that combines free-movement, turn-based combat with a branching dungeon descent. Lead one hero through four dangerous floors, building your abilities and managing the resources that keep you alive.

Every fight leaves its mark. Health, physical armour, magic resistance, and supplies carry between encounters. Winning the room is only part of surviving the run.

Choose your hero

• Warden: Build Momentum through movement, smash through armour, and send enemies crashing into hazards.

• Ranger: Build Focus for powerful bow shots, control your distance, and reshape the battlefield with elemental arrows.

• Magus: Alternate spell elements to build Attunement, setting up combinations of water, lightning, frost, and fire.

Each hero has a branching skill tree with six paths and late-run mastery upgrades. Combine paths, learn abilities, and assemble equipment and trinkets around your chosen approach.

Turn the battlefield into a weapon

Spend action points to move freely, attack, and combine abilities. Use cover and high ground, break enemy defences, and create openings for disabling effects.

Ignite oil slicks. Electrify connected water. Freeze wet ground or raise clouds of steam to block sightlines. Drive enemies into pits, burning surfaces, or each other with charges, hooks, and knockback. The room offers more ways to win than damage alone.

Plan your descent

Chart a forward route through interconnected dungeon chambers. Weigh dangerous elite encounters against merchants, treasure, shrines, and events with choices and consequences. Spend your gold, choose your rewards, and decide when recovery matters more than another upgrade.

Every campaign begins in the Ossuary. Later floors draw from nine themed destinations, including the Sunken Foundry, Rootbound Cathedral, Glass Sepulchre, and Hollow Observatory, each with its own enemies, hazards, and boss.

Defeat the fourth floor’s boss to complete your descent—or begin again with another hero, another build, and another route.