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 Steam's cut; from 133 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 Castle Cardians and predicted how it would do from its 8 similar games. Every figure here, including Castle Cardians's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 205k–586k

best case 8.3M (Slay the Spire)

Games like Castle Cardians

A typical game among these

≈ 205k–586k copies

≈ $1.3M–$4.5M after Steam's cut

from ~9k 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: Slay the Spire at ≈ 6.3M–10.3M copies, ≈ $43.5M–$116.9M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like

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

The genre you'd be entering

These games: The similar games share 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.
When they shipped: The similar games span 2015 to 2024, 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

Game	Est. copies	Est. revenue	Price	Reviews	Tags
DICEOMANCER 2024	Est. copies ≈ 139k–227k SteamSpy 100k–200k	Est. revenue $575k–$1.5M after Steam's cut $1.0M–$2.4M before Steam's cut	$14.99	6k reviews Overwhelmingly Positive	StrategyCard Game
Balatro 2024	Est. copies ≈ 5.0M–8.1M 23x vs typical SteamSpy 2M–5M	Est. revenue $20.5M–$55.0M after Steam's cut $37.2M–$84.7M before Steam's cut	$14.99	200k reviews Overwhelmingly Positive	Card GameRoguelike Deckbuilder
Slay the Spire 2019	Est. copies ≈ 6.3M–10.3M 25x vs typical SteamSpy 5M–10M	Est. revenue $43.5M–$116.9M after Steam's cut $79.0M–$179.8M before Steam's cut	$24.99	220k reviews Overwhelmingly Positive	Roguelike DeckbuilderCard Game
Dungeons & Degenerate Gamblers 2024	Est. copies ≈ 91k–148k SteamSpy 100k–200k	Est. revenue $376k–$1.0M after Steam's cut $683k–$1.6M before Steam's cut	$14.99	4k reviews Very Positive	Roguelike DeckbuilderStrategy
Wildfrost 2023	Est. copies ≈ 220k–357k SteamSpy 500k–1M	Est. revenue $1.2M–$3.2M after Steam's cut $2.2M–$5.0M before Steam's cut	$19.99	9k reviews Very Positive	Card BattlerDifficult
Tainted Grail: Conquest 2021	Est. copies ≈ 208k–338k SteamSpy 200k–500k	Est. revenue $1.1M–$3.1M after Steam's cut $2.1M–$4.7M before Steam's cut	$19.99	8k reviews Very Positive	DeckbuildingCard Game
Monster Train 2020	Est. copies ≈ 570k–927k 2.7x vs typical SteamSpy 500k–1M	Est. revenue $3.9M–$10.5M after Steam's cut $7.1M–$16.2M before Steam's cut	$24.99	23k reviews Overwhelmingly Positive	Card BattlerRogue-lite
Hand of Fate 2015	Est. copies ≈ 522k–848k SteamSpy 500k–1M	Est. revenue $2.9M–$7.7M after Steam's cut $5.2M–$11.9M before Steam's cut	$19.99	11k reviews Very Positive	Roguelike Deckbuilder Rogue-like