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How many copies did CosmoPirates sell?

Estimated copies sold
≈ 2k–3k
$5k–$15k after Steam's cut $10k–$23k before the cut
from 69 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 CosmoPirates out and predicted the genre from its 8 similar games. Every figure here, including CosmoPirates's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 450k–734k
best case 8.2M (Slay the Spire)
The Card Game genre

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

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

A typical game
≈ 450k–734k copies
≈ $3.4M–$4.3M after Steam's cut
from ~14k reviews
Best case
≈ 6.2M–10.1M copies
Slay the Spire · ≈ $42.8M–$115.2M after Steam's cut
A breakout hit, far above a typical game.
The genre you'd be entering
Your set
Your set clusters on Card Game (6 of 8) and Deckbuilding (6 of 8).
The winners
Winners here lead with Roguelike Deckbuilder + Card Game, priced around $20. The breakout hits carry Singleplayer + Roguelike Deckbuilder + Rogue-like; a typical game here doesn't.
The era
The games you compared span 2018 to 2024, a genre with a long track record.

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

Similar games

Slay the Spire
2019
Est. copies
≈ 6.2M–10.1M
15x vs typical
SteamSpy 5M–10M
Est. revenue
$42.8M–$115.2M after Steam's cut $77.9M–$177.2M before the cut
$24.99
216k reviews
Overwhelmingly Positive
Dicey Dungeons
2019
Est. copies
≈ 338k–549k
SteamSpy 200k–500k
Est. revenue
$1.4M–$3.7M after Steam's cut $2.5M–$5.8M before the cut
$14.99
12k reviews
Very Positive
Roguelike DeckbuilderCard Battler
ROUNDS
2021
Est. copies
≈ 1.1M–1.8M
3.1x vs typical
SteamSpy 2M–5M
Est. revenue
$1.8M–$4.8M after Steam's cut $3.3M–$7.4M before the cut
$5.99
44k reviews
Overwhelmingly Positive
MultiplayerFighting
Monster Train
2020
Est. copies
≈ 604k–982k
1.6x vs typical
SteamSpy 500k–1M
Est. revenue
$4.2M–$11.2M after Steam's cut $7.6M–$17.2M before the cut
$24.99
23k reviews
Overwhelmingly Positive
Card BattlerRogue-lite
Cultist Simulator
2018
Est. copies
≈ 426k–692k
SteamSpy 500k–1M
Est. revenue
$2.3M–$6.3M after Steam's cut $4.3M–$9.7M before the cut
$19.99
14k reviews
Mostly Positive
SimulationChoices Matter
Balatro
2024
Est. copies
≈ 4.7M–7.6M
14x vs typical
SteamSpy 2M–5M
Est. revenue
$19.4M–$52.1M after Steam's cut $35.2M–$80.1M before the cut
$14.99
196k reviews
Overwhelmingly Positive
Chrono Ark
2024
Est. copies
≈ 328k–533k
SteamSpy 200k–500k
Est. revenue
$2.3M–$6.1M after Steam's cut $4.1M–$9.3M before the cut
$24.99
14k reviews
Very Positive
Griftlands
2021
Est. copies
≈ 358k–581k
SteamSpy 500k–1M
Est. revenue
$2.0M–$5.3M after Steam's cut $3.6M–$8.1M before the cut
$19.99
14k reviews
Very Positive
Card BattlerRogue-lite

Sizing up your own game? See what its genre can realistically do before you build it.