Underdeep

Underdeep is an idle RPG set in a fantasy world, where you explore and map dungeons. You create a character and guide their development as they venture into increasingly dangerous areas in search of gear and treasure.

The dungeon

A mysterious, monster-infested dungeon has opened in a deep forest near the royal capital. The first person to enter returned drenched in blood with an armful of gold, and news of the riches drew mercenaries, knights and adventurers into the forest. Rumors say the depths hold a treasure powerful enough to shake the throne. You begin at the dungeon entrance, where your character’s story starts.

As you explore, locations are recorded automatically, and you can add custom markers to track important places. Careful observation and note-taking help you navigate expeditions.

Create and develop

You name your character, choose their appearance and begin as a Newbie. As they gain experience, they can take on roles including warrior, rogue, ruler and crafter. Their growth determines the path they follow.

You can shape a build with different skills, some of which combine into powerful synergies. More than 500 items—including weapons, armor and accessories—can be used strategically as you push into more dangerous and rewarding areas.

Exploration and encounters

Exploration can use manual or automated actions. You can set a strategy in advance and let your character continue adventuring while you are away.

The dungeon may also contain characters created by other players. You can configure your character’s dialogue and behavior for these spontaneous, asynchronous encounters.

Karma

Your actions in the dungeon affect your character’s karma, taking them toward the path of light or into darkness.