How much revenue did Castle Cardians make?

$14k–$37k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Castle Cardians sell?

Q: How many copies did Castle Cardians sell?

3k to 5k copies, based on its 133 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 3k–5k; $14k–$37k after Steam's cut $25k–$56k before the cut; from 133 reviews (Mostly 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 Castle Cardians out and predicted the genre from its 8 similar games. Every figure here, including Castle Cardians's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 205k–585k

best case 8.2M (Slay the Spire)

Games like Castle Cardians

The middle of these games

≈ 205k–585k copies

≈ $1.3M–$4.5M after Steam's cut

from ~9k 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: Slay the Spire at ≈ 6.3M–10.2M copies, ≈ $43.1M–$116.0M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

About half the games that made it here had over 3k reviews in their first month; the spread ran 1k to 21k.

The genre you'd be entering

Your set: Your set clusters on Card Game (8 of 8) and Deckbuilding (8 of 8).
The winners: Winners here lead with Card Game + Roguelike Deckbuilder, priced around $20. The breakout hits carry Singleplayer + Strategy + Pixel Graphics; a typical game here doesn't.
The era: The games you compared span 2015 to 2024, 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 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

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DICEOMANCER 2024	Est. copies ≈ 139k–226k SteamSpy 100k–200k	Est. revenue $573k–$1.5M after Steam's cut $1.0M–$2.4M before the cut	$14.99	6k reviews Overwhelmingly Positive	StrategyCard Game
Balatro 2024	Est. copies ≈ 4.9M–8.0M 23x vs typical SteamSpy 2M–5M	Est. revenue $20.2M–$54.4M after Steam's cut $36.8M–$83.7M before the cut	$14.99	198k reviews Overwhelmingly Positive	Card GameRoguelike Deckbuilder
Slay the Spire 2019	Est. copies ≈ 6.3M–10.2M 25x vs typical SteamSpy 5M–10M	Est. revenue $43.1M–$116.0M after Steam's cut $78.4M–$178.5M before the cut	$24.99	218k reviews Overwhelmingly Positive	Roguelike DeckbuilderCard Game
Dungeons & Degenerate Gamblers 2024	Est. copies ≈ 88k–143k SteamSpy 100k–200k	Est. revenue $362k–$973k after Steam's cut $658k–$1.5M before the cut	$14.99	4k reviews Very Positive	Roguelike DeckbuilderStrategy
Wildfrost 2023	Est. copies ≈ 219k–356k SteamSpy 500k–1M	Est. revenue $1.2M–$3.2M after Steam's cut $2.2M–$5.0M before the cut	$19.99	9k reviews Very Positive	Card BattlerDifficult
Tainted Grail: Conquest 2021	Est. copies ≈ 207k–337k SteamSpy 200k–500k	Est. revenue $1.1M–$3.1M after Steam's cut $2.1M–$4.7M before the cut	$19.99	8k reviews Very Positive	DeckbuildingCard Game
Monster Train 2020	Est. copies ≈ 569k–924k 2.7x vs typical SteamSpy 500k–1M	Est. revenue $3.9M–$10.5M after Steam's cut $7.1M–$16.2M before the cut	$24.99	23k reviews Overwhelmingly Positive	Card BattlerRogue-lite
Hand of Fate 2015	Est. copies ≈ 521k–847k SteamSpy 500k–1M	Est. revenue $2.9M–$7.7M after Steam's cut $5.2M–$11.9M before the cut	$19.99	11k reviews Very Positive	Roguelike Deckbuilder Rogue-like