How many copies did Idle Slayer sell?

An estimated 280k to 455k copies, based on its 11k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Idle Slayer make?

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

How big is Idle Slayer?

Estimated owners: ≈ 280k–455k; from 11k reviews (Very 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 Idle Slayer out and predicted the genre from its 8 similar games. Every figure here, including Idle Slayer's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 902k–917k

best case 3.8M (Clicker Heroes)

The Idler lane

A big, proven genre, though hit-driven: most sell around 914k copies, while a few break out far above.

A typical game

≈ 914k copies

from ~27k reviews

Best case

≈ 3.8M copies

Clicker Heroes

from 62k reviews

A breakout hit, far above a typical game.

3 of your 8 games sit in the typical range; 2 are breakout hits far above it, and 3 are too small to compare.

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 $1.
The breakout hits carry Management + 2D + Funny; a typical game here doesn't.
The games you compared span 2014 to 2025, a lane with a long track record.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
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
Mountain 2014	Est. copies ≈ 847k–1.4M too small to compare SteamSpy 500k–1M	Est. revenue $231k–$620k net $419k–$954k gross	$0.99	16k reviews Very Positive	SimulationIndie +6
Clicker Heroes 2015	Est. copies ≈ 2.9M–4.7M 2.3x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	62k reviews Very Positive	ClickerIdler +6
Mr.Mine 2020	Est. copies ≈ 489k–794k too small to compare SteamSpy 500k–1M	Est. revenue Free	Free	19k reviews Very Positive	IdlerClicker +6
IdleOn 2025	Est. copies ≈ 702k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	29k reviews Mostly Positive	IdlerPixel Graphics +6
Shop Titans 2020	Est. copies ≈ 472k–767k too small to compare SteamSpy 1M–2M	Est. revenue Free	Free	18k reviews Mostly Positive	IdlerShop Keeper +6
AdVenture Capitalist 2015	Est. copies ≈ 2.8M–4.5M 2.2x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	60k reviews Very Positive	ClickerIdler +6