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How many copies did Island Idle RPG sell?

Estimated copies sold
≈ 2k–4k
$2k–$5k after Steam's cut $4k–$8k before the cut
from 99 reviews (Mixed)

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

Copies, estimated from reviews

typical (middle half) 484k–601k
best case 966k (IdleOn - The Incremental MMO)
Games like Island Idle RPG

The middle of these games

≈ 484k–601k copies

≈ $493k–$915k after Steam's cut

from ~16k reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

All 8 of your similar games are hits.

Best case: IdleOn - The Incremental MMO at ≈ 736k–1.2M copies. A breakout hit, far above a typical game.

What it took to get here
About half the games that made it here had over 4k reviews in their first month; the spread ran 678 to 26k.
The genre you'd be entering
Your set
Your set clusters on Idler (7 of 8) and Simulation (6 of 8).
The winners
Winners here lead with Idler + Clicker. The breakout hits carry Free to Play + MMORPG + RPG; a typical game here doesn't.
The era
The games you compared span 2014 to 2025, and 3 of your 8 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

Mountain
2014
Est. copies
≈ 912k–1.5M
SteamSpy 500k–1M
Est. revenue
$248k–$668k after Steam's cut $452k–$1.0M before the cut
$0.99
16k reviews
Very Positive
SimulationIndie
NGU IDLE
2019
Est. copies
≈ 373k–606k
SteamSpy 500k–1M
Est. revenue
Free
Free
13k reviews
Overwhelmingly Positive
Free to PlayIdler
Mr.Mine
2020
Est. copies
≈ 462k–751k
SteamSpy 500k–1M
Est. revenue
Free
Free
19k reviews
Very Positive
IdlerClicker
Rusty's Retirement
2024
Est. copies
≈ 367k–597k
SteamSpy 200k–500k
Est. revenue
$706k–$1.9M after Steam's cut $1.3M–$2.9M before the cut
$6.99
15k reviews
Overwhelmingly Positive
IdlerFarming Sim
IdleOn - The Incremental MMO
2025
Est. copies
≈ 736k–1.2M
1.9x vs typical
SteamSpy 1M–2M
Est. revenue
Free
Free
30k reviews
Mostly Positive
IdlerPixel Graphics
Nodebuster
2024
Est. copies
≈ 348k–566k
SteamSpy 200k–500k
Est. revenue
$286k–$770k after Steam's cut $520k–$1.2M before the cut
$2.99
14k reviews
Overwhelmingly Positive
CasualClicker
Cell to Singularity - Evolution Never Ends
2021
Est. copies
≈ 693k–1.1M
1.8x vs typical
SteamSpy 1M–2M
Est. revenue
Free
Free
28k reviews
Very Positive
ClickerFree to Play
Shop Titans
2020
Est. copies
≈ 446k–724k
SteamSpy 1M–2M
Est. revenue
Free
Free
18k reviews
Mostly Positive
IdlerShop Keeper

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