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Underworld Idle

by · listed 2026
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WindowsSteam

what is Underworld Idle?

An idle dungeon management game where advanced units can produce lower-tier units.

Manage your dungeon by producing and upgrading units in this idle game. Higher-tier units have the ability to create lower-tier ones, adding a layer of strategy to your management.

It sits in the Idle / Numbers / Management / RPG / Minimalist corner of the genre. Like most idle games it runs on a simple loop — earn, reinvest, automate — but the depth is in how long that loop keeps unfolding. Expect to check in, make a few decisions, and watch the numbers climb whether you're at the keyboard or not.

New to incrementals? Read our beginner's guide first, or just hit play — these games are built to teach themselves.