How many copies did Idle Slayer sell?

282k to 459k 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: ≈ 282k–459k; 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) 631k–877k

best case 3.8M (Clicker Heroes)

The Idler genre

All 8 of your similar games are hits. A healthy genre for a game like yours.

Your picks lean toward this genre's biggest survivors; the typical figure reads from its ordinary successes.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 631k–877k copies

≈ $425k after Steam's cut

from ~18k reviews

Best case

≈ 2.9M–4.7M copies

Clicker Heroes

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Idler (7 of 8) and Clicker (6 of 8).
The winners: Winners here lead with Clicker + Idler, priced around $1. The breakout hits carry Free to Play + Clicker; a typical game here doesn't.
The era: The games you compared span 2014 to 2025, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Cell to Singularity - Evolution Never Ends 2021	Est. copies ≈ 682k–1.1M 1.5x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	28k reviews Very Positive	ClickerFree to Play
Leaf Blower Revolution - Idle Game 2020	Est. copies ≈ 696k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	26k reviews Very Positive	IdlerClicker
Mountain 2014	Est. copies ≈ 847k–1.4M SteamSpy 500k–1M	Est. revenue $231k–$620k after Steam's cut $419k–$954k before the cut	$0.99	16k reviews Very Positive	SimulationIndie
Clicker Heroes 2015	Est. copies ≈ 2.9M–4.7M 3.5x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	62k reviews Very Positive	ClickerIdler
Mr.Mine 2020	Est. copies ≈ 489k–795k SteamSpy 500k–1M	Est. revenue Free	Free	19k reviews Very Positive	IdlerClicker
IdleOn 2025	Est. copies ≈ 704k–1.1M 1.6x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	29k reviews Mostly Positive	IdlerPixel Graphics
Shop Titans 2020	Est. copies ≈ 472k–768k SteamSpy 1M–2M	Est. revenue Free	Free	18k reviews Mostly Positive	IdlerShop Keeper
AdVenture Capitalist 2015	Est. copies ≈ 2.8M–4.5M 3.4x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	60k reviews Very Positive	ClickerIdler