How much revenue did SULFUR make?

$1.8M–$4.8M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did SULFUR sell?

Q: How many copies did SULFUR sell?

259k to 421k copies, based on its 10k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 259k–421k; $1.8M–$4.8M after Steam's cut $3.2M–$7.4M before Steam's cut; from 10k reviews (Very 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 SULFUR and predicted how it would do from its 8 similar games. Every figure here, including SULFUR's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 362k–1.8M

best case 12.4M (Deep Rock Galactic)

Games like SULFUR

A typical game among these

≈ 362k–1.8M copies

≈ $3.4M–$15.8M after Steam's cut

from ~21k 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: Deep Rock Galactic at ≈ 9.4M–15.3M copies, ≈ $77.8M–$209.2M after Steam's cut.

What their first month looked like

About half the games that made it here had over 10k reviews in their first month; the range was 2k to 63k.

The genre you'd be entering

These games: The similar games share FPS (7 of 8) and Rogue-lite (4 of 8).
The winners: Winners here lead with Dwarf + Co-op, priced around $30.
When they shipped: Only 2 of the 8 similar games shipped in the last two years. That says more about which games were found than about the market.

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 of about 31, 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
Gunfire Reborn 2021	Est. copies ≈ 2.6M–4.2M 5.0x vs typical SteamSpy 2M–5M	Est. revenue $14.2M–$38.1M after Steam's cut $25.7M–$58.5M before Steam's cut	$19.99	104k reviews Very Positive	Rogue-lite FPS
Deep Rock Galactic 2020	Est. copies ≈ 9.4M–15.3M 18x vs typical SteamSpy 5M–10M	Est. revenue $77.8M–$209.2M after Steam's cut $141.5M–$321.9M before Steam's cut	$29.99	380k reviews Overwhelmingly Positive	DwarfCo-op
嗜血印 Bloody Spell 2022	Est. copies ≈ 976k–1.6M 1.9x vs typical SteamSpy 1M–2M	Est. revenue $6.7M–$18.0M after Steam's cut $12.2M–$27.7M before Steam's cut	$24.99	39k reviews Very Positive	NuditySexual Content
Roboquest 2023	Est. copies ≈ 608k–989k SteamSpy 500k–1M	Est. revenue $4.2M–$11.2M after Steam's cut $7.6M–$17.3M before Steam's cut	$24.99	25k reviews Overwhelmingly Positive	FPSAction Roguelike
SUPERHOT: MIND CONTROL DELETE 2020	Est. copies ≈ 318k–516k SteamSpy 1M–2M	Est. revenue $2.2M–$5.9M after Steam's cut $4.0M–$9.0M before Steam's cut	$24.99	13k reviews Very Positive	FPSTime Manipulation
Deadlink 2023	Est. copies ≈ 91k–148k SteamSpy 1M–2M	Est. revenue $627k–$1.7M after Steam's cut $1.1M–$2.6M before Steam's cut	$24.99	4k reviews Very Positive	FPSAction Roguelike
Deadzone: Rogue 2025	Est. copies ≈ 415k–674k SteamSpy 200k–500k	Est. revenue $2.8M–$7.7M after Steam's cut $5.2M–$11.8M before Steam's cut	$24.99	17k reviews Very Positive	Early AccessRogue-like
Sker Ritual 2024	Est. copies ≈ 149k–242k SteamSpy 200k–500k	Est. revenue $820k–$2.2M after Steam's cut $1.5M–$3.4M before Steam's cut	$19.99	6k reviews Very Positive	Story RichMultiplayer