How many copies did Underworld Idle sell?

An estimated 32k to 53k copies, based on its 1k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Underworld Idle make?

Underworld Idle is free to play, so there is no copy-sales revenue to estimate.

How big is Underworld Idle?

Estimated owners: ≈ 32k–53k; from 1k reviews (Mostly Positive)

A labeled estimate from the public review count (adjusted for release year), not exact sales. Owner data cross-checked with SteamSpy.

Does this actually work?

We left Underworld Idle out and predicted the genre from its 8 similar games. Every figure here, including Underworld Idle's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 887k–3.2M

best case 3.0M (Cookie Clicker)

The Clicker lane

A big, proven genre: most sell around 917k copies.

A typical game

≈ 917k copies

≈ $5.8M after Steam's cut

from ~28k reviews

Best case

≈ 3.0M copies

Cookie Clicker · ≈ $5.8M after Steam's cut

from 92k reviews

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Clicker + Idler, priced around $5.
The games you compared span 2015 to 2025, a lane with a long track record.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
IdleOn 2025	Est. copies ≈ 702k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	29k reviews Mostly Positive	IdlerPixel Graphics +6
Cookie Clicker 2021	Est. copies ≈ 2.3M–3.7M 3.2x vs typical SteamSpy 2M–5M	Est. revenue $3.1M–$8.4M net $5.7M–$12.9M gross	$4.99	92k reviews Overwhelmingly Positive	ClickerIdler +6
AdVenture Capitalist 2015	Est. copies ≈ 2.8M–4.5M 2.1x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	60k reviews Very Positive	ClickerIdler +6
Mr.Mine 2020	Est. copies ≈ 489k–794k SteamSpy 500k–1M	Est. revenue Free	Free	19k reviews Very Positive	IdlerClicker +6
Cell to Singularity - Evolution Never Ends 2021	Est. copies ≈ 679k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	27k reviews Very Positive	ClickerFree to Play +6
Leaf Blower Revolution - Idle Game 2020	Est. copies ≈ 696k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	26k reviews Very Positive	IdlerClicker +6
Clicker Heroes 2015	Est. copies ≈ 2.9M–4.7M 2.2x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	62k reviews Very Positive	ClickerIdler +6
Sakura Clicker 2015	Est. copies ≈ 665k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	14k reviews Very Positive	NudityFree to Play +6