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How many copies did Cozy Island Idle sell?

Estimated copies sold
≈ 1k–2k
$1k–$3k after Steam's cut $2k–$4k before Steam's cut
from 52 reviews (Mixed)

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 Cozy Island Idle and predicted how it would do from its 8 similar games. Every figure here, including Cozy Island Idle's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 187–84k
best case 1.1M (Cat Goes Fishing)
Games like Cozy Island Idle

A typical game among these

≈ 187–84k copies

≈ $503–$312k after Steam's cut

from ~346 reviews

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

2 of the 8 similar games are hits.

Best case: Cat Goes Fishing at ≈ 808k–1.3M copies, ≈ $1.6M–$4.2M after Steam's cut.

What their first month looked like
About half the games that made it here had over 34 reviews in their first month; the range was 1 to 795.
Games with under about 100 reviews in month one almost never recover.
The genre you'd be entering
These games
The similar games share Idler (7 of 8) and Clicker (4 of 8).
The winners
Winners here lead with Fishing + Cats, priced around $7.
When they shipped
The similar games span 2015 to 2025, and 3 of the 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 61 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Chillquarium
2023
Est. copies
≈ 209k–339k
24x vs typical
SteamSpy 200k–500k
Est. revenue
$344k–$925k after Steam's cut $626k–$1.4M before Steam's cut
$5.99
8k reviews
Very Positive
Creature CollectorIdler
Cat Goes Fishing
2015
Est. copies
≈ 808k–1.3M
48x vs typical
SteamSpy 500k–1M
Est. revenue
$1.6M–$4.2M after Steam's cut $2.8M–$6.4M before Steam's cut
$6.99
17k reviews
Very Positive
FishingCats
Machorium -Muscle Aquarium Simulator-
2024
Est. copies
≈ 2k–3k
SteamSpy under 20k
Est. revenue
$4k–$11k after Steam's cut $7k–$16k before Steam's cut
$7.99
73 reviews
Very Positive
SimulationIdler
Joyquarium
2025
Est. copies
≈ 15k–25k
1.8x vs typical
SteamSpy under 20k
Est. revenue
$25k–$68k after Steam's cut $46k–$105k before Steam's cut
$5.99
619 reviews
Very Positive
Creature CollectorIdler
Fish Game
2023
Est. copies
≈ 16k–26k
1.9x vs typical
SteamSpy under 20k
Est. revenue
$111k–$297k after Steam's cut $201k–$458k before Steam's cut
$24.99
649 reviews
Very Positive
Immersive SimCreature Collector
Ocean Cat
2023
Est. copies
≈ 124–202
SteamSpy under 20k
Est. revenue
$340–$918 after Steam's cut $619–$1k before Steam's cut
$9.99
5 reviews
5 user reviews
CasualArcade
Neptune's Garden
2023
Est. copies
≈ 50–81
SteamSpy under 20k
Est. revenue
$69–$184 after Steam's cut $125–$283 before Steam's cut
$4.99
2 reviews
2 user reviews
SimulationCasual
Idle Aquarium
2025
Est. copies
≈ 149–242
SteamSpy under 20k
Est. revenue
$41–$109 after Steam's cut $74–$168 before Steam's cut
$0.99
6 reviews
6 user reviews
CasualGod Game

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