How much revenue did Stillborn Slayer make?

$715–$2k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Stillborn Slayer sell?

Q: How many copies did Stillborn Slayer sell?

521 to 846 copies, based on its 21 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 521–846; $715–$2k after Steam's cut $1k–$3k before Steam's cut; from 21 reviews (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 Stillborn Slayer and predicted how it would do from its 8 similar games. Every figure here, including Stillborn Slayer's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 959k–4.4M

best case 8.7M (Vampire Survivors)

Games like Stillborn Slayer

A typical game among these

≈ 959k–4.4M copies

≈ $3.3M–$9.4M after Steam's cut

from ~48k 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: Vampire Survivors at ≈ 6.6M–10.7M copies, ≈ $9.1M–$24.4M 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 24k reviews in their first month; the range was 5k to 129k.

The genre you'd be entering

These games: The similar games share Action Roguelike (8 of 8) and Bullet Hell (7 of 8).
The winners: Winners here lead with Action Roguelike + Bullet Hell, priced around $5. The breakout hits carry Vampire + 2D + Singleplayer; a typical game here doesn't.
When they shipped: The similar games span 2011 to 2025, and 2 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 79 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
Death Must Die 2023	Est. copies ≈ 541k–879k SteamSpy 500k–1M	Est. revenue $1.0M–$2.8M after Steam's cut $1.9M–$4.3M before Steam's cut	$6.99	22k reviews Very Positive	Action RoguelikeBullet Hell
Brotato 2023	Est. copies ≈ 3.0M–4.8M 2.5x vs typical SteamSpy 2M–5M	Est. revenue $4.1M–$10.9M after Steam's cut $7.4M–$16.8M before Steam's cut	$4.99	119k reviews Overwhelmingly Positive	Rogue-likeSingleplayer
Enter the Gungeon 2016	Est. copies ≈ 3.7M–6.1M 1.9x vs typical SteamSpy 2M–5M	Est. revenue $15.4M–$41.5M after Steam's cut $28.1M–$63.9M before Steam's cut	$14.99	90k reviews Overwhelmingly Positive	Bullet HellAction Roguelike
Halls of Torment 2024	Est. copies ≈ 793k–1.3M SteamSpy 500k–1M	Est. revenue $1.5M–$3.9M after Steam's cut $2.6M–$6.0M before Steam's cut	$6.66	32k reviews Overwhelmingly Positive	Action RoguelikeRogue-lite
Vampire Survivors 2022	Est. copies ≈ 6.6M–10.7M 5.6x vs typical SteamSpy 5M–10M	Est. revenue $9.1M–$24.4M after Steam's cut $16.5M–$37.5M before Steam's cut	$4.99	267k reviews Overwhelmingly Positive	Action RoguelikeBullet Hell
Realm of the Mad God Exalt 2012	Est. copies ≈ 3.0M–4.9M SteamSpy 500k–1M	Est. revenue Free	Free	48k reviews Very Positive	Pixel GraphicsMMORPG
Soulstone Survivors 2025	Est. copies ≈ 668k–1.1M SteamSpy 500k–1M	Est. revenue $2.8M–$7.4M after Steam's cut $5.0M–$11.4M before Steam's cut	$14.99	27k reviews Very Positive	Action RoguelikeBullet Hell
The Binding of Isaac 2011	Est. copies ≈ 4.0M–6.5M SteamSpy 1M–2M	Est. revenue $5.5M–$14.7M after Steam's cut $9.9M–$22.6M before Steam's cut	$4.99	63k reviews Very Positive	Action RoguelikeRogue-like