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Games like Underworld Idle | IndieDex

Underworld Idle
Games like Underworld Idle

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Games like Underworld Idle

A grindy free-to-play idle dungeon manager where high-tier units create low-tier ones, offering a very long prestige-driven progression that has drawn mixed player reviews.

Zombidle : REMONSTERED
A darkly comedic idle/tap game about clicking zombies, with gradual progression and a small-sample reviewer median of around 34 hours.
2017-05-30
- Strategy
- Indie

Tower Walker: MMO Grind Simulator cover art

Tower Walker: MMO Grind Simulator

A single-player semi-idle auto-grinder where you indirectly guide a hero up a mysterious tower through MMORPG/RTS-inspired progression, with an addictive but QoL-frustrating loop that stretches for hundreds of hours.

2023-02-08

Indie
Simulator
Role-playing (RPG)

Realm Grinder cover art

Realm Grinder

A free-to-play single-player idle RPG where you grow a realm, choose among fantasy factions, and make strategic upgrade decisions across long-term scaling challenges.

2017-06-15

Strategy
Fantasy
Bird view / Isometric
Text
Role-playing (RPG)

Dungeon Tycoon cover art

Dungeon Tycoon

A dungeon-management sim about building an evil dungeon to attract and exploit heroes, with engaging early hours that lose steam due to balance and pacing issues.

2024-09-25

Strategy
Fantasy
Indie
Simulator

Loot of Baal cover art

Loot of Baal

A single-player idle RPG about managing a hireling crew to fight demons and gather loot, offering a casual low-interaction Diablo 2-style loot loop with late-game balance issues and long reviewer playtimes.

2025-06-16

Strategy
Fantasy
Bird view / Isometric
Role-playing (RPG)

Synergism cover art

Synergism

A lengthy, free-to-play single-player idle game about stacking synergy upgrades across many reset layers, with opaque progression that turns grindy at later milestones.

2026-02-20

Strategy
Indie

Antimatter Dimensions cover art

Antimatter Dimensions

A deep single-player idle game about earning antimatter through dimensions and collapsing the universe, with hundreds of hours of mathematical progression.

2022-12-17

Strategy
Indie
Simulator

Territory Idle cover art

Territory Idle

A strategic idle game where you develop a kingdom, abdicate for gold, and expand your territory through a satisfying incremental progression loop.

2019-09-10

Strategy
Indie
Text

Trimps cover art

Trimps

A text-based idle/incremental game centered on automation and unlocking content across a vast, hundreds-of-hours-long progression.

2022-05-02

Strategy
Indie
Simulator
Text
4X (explore, expand, exploit, and exterminate)

Grim Clicker cover art

Grim Clicker

A free-to-play 2D idle/RPG clicker in dark fantasy worlds with deep character builds and active/passive play, praised for its reset system but prone to repetition.

2024-01-30

Indie
Role-playing (RPG)

Horripilant cover art

Horripilant

A chilling single-player idle incremental dungeon crawler set in a forgotten underworld, mixing automated combat and escape-room puzzles over a long, review-median ~26-hour runtime.

2026-02-20

First person
Puzzle
Horror
Fantasy
Indie
Side view
Text
Point-and-click
Auditory

Idle Slayer cover art

Idle Slayer

A single-player, free-to-play idle RPG about collecting souls, upgrading gear, and exploring dimensions, with active/offline progression and a reviewer-reported long, often erratic grind.

2020-12-21

Strategy
Fantasy
Indie
Side view