Underworld Idle

Underworld Idle is an idle game about managing the underworld. Higher-order units produce lower-order units, allowing you to expand from a small stock of resources into a long chain of units and increasingly large quantities.

Factions and production

The game features demons, undead, utopians and blackseekers, each responsible for producing its own resource. Higher demons create lower demons, and the same production pattern applies to units of the undead, drowners and warlocks.

Progression and locations

You can keep expanding through an effectively infinite progression of units and resources. Infernal Contracts provide prestige mechanics, and locations include a laboratory with energy crystals, a junkyard and a library containing a grimoire of dark spells.