How many copies did IdleOn - The Incremental MMO sell?

741k to 1.2M copies, based on its 30k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did IdleOn - The Incremental MMO make?

IdleOn - The Incremental MMO is free to play, so there is no copy-sales revenue to estimate.

How big is IdleOn - The Incremental MMO?

Estimated players who have it: ≈ 741k–1.2M; from 30k reviews (Mostly Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

Did the prediction match what actually happened?

We hid IdleOn - The Incremental MMO and predicted how it would do from its 8 similar games. Every figure here, including IdleOn - The Incremental MMO's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 333k–876k

best case 862k (Leaf Blower Revolution - Idle Game)

Games like IdleOn - The Incremental MMO

A typical game among these

≈ 333k–876k copies

≈ $458k after Steam's cut

from ~13k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

All 8 of the similar games are hits.

Best case: Leaf Blower Revolution - Idle Game at ≈ 657k–1.1M copies.

What their first month looked like

About half the games that made it here had over 1k reviews in their first month; the range was 114 to 3k.

The genre you'd be entering

These games: The similar games share Clicker (7 of 8) and Idler (5 of 8).
The winners: Winners here lead with Idler + Clicker.
When they shipped: The similar games span 2014 to 2020, and none of them shipped in the last two years.

How these numbers were worked out

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

Copies come from each game's reviews times a sales-per-review rate that falls with release age, from about 31 for the most recent game here to about 70 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Soda Dungeon 2017	Est. copies ≈ 218k–355k SteamSpy 500k–1M	Est. revenue Free	Free	6k reviews Very Positive	Free to PlayRPG
Mountain 2014	Est. copies ≈ 912k–1.5M SteamSpy 500k–1M	Est. revenue $248k–$668k after Steam's cut $452k–$1.0M before Steam's cut	$0.99	16k reviews Very Positive	SimulationIndie
Sakura Clicker 2015	Est. copies ≈ 698k–1.1M SteamSpy 1M–2M	Est. revenue Free	Free	14k reviews Very Positive	NudityFree to Play
Mr.Mine 2020	Est. copies ≈ 463k–752k SteamSpy 500k–1M	Est. revenue Free	Free	19k reviews Very Positive	IdlerClicker
Leaf Blower Revolution - Idle Game 2020	Est. copies ≈ 657k–1.1M 2.1x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	26k reviews Very Positive	IdlerClicker
PickCrafter 2017	Est. copies ≈ 246k–400k SteamSpy 500k–1M	Est. revenue Free	Free	7k reviews Very Positive	MiningIdler
Idle Slayer 2020	Est. copies ≈ 270k–439k SteamSpy 500k–1M	Est. revenue Free	Free	11k reviews Very Positive	CasualIdler
Realm Grinder 2017	Est. copies ≈ 256k–416k SteamSpy 1M–2M	Est. revenue Free	Free	7k reviews Very Positive	Free to PlayClicker