How much revenue did Sumerian Six make?

$262k–$703k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Sumerian Six sell?

Q: How many copies did Sumerian Six sell?

32k to 52k copies, based on its 1k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 32k–52k; $262k–$703k after Steam's cut $476k–$1.1M before Steam's cut; from 1k 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 Sumerian Six and predicted how it would do from its 8 similar games. Every figure here, including Sumerian Six's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 2.3M–3.2M

best case 8.0M (ULTRAKILL)

Games like Sumerian Six

A typical game among these

≈ 2.3M–3.2M copies

≈ $15.7M–$43.6M after Steam's cut

from ~70k 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.

No genre covers most of these similar games. The closest is Sandbox (3 of 8), so its genre is hard to place.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: ULTRAKILL at ≈ 6.1M–9.9M copies, ≈ $50.2M–$134.8M 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 19k reviews in their first month; the range was 115 to 55k.

The genre you'd be entering

These games: The similar games share Sandbox (3 of 8) and Simulation (3 of 8).
The winners: Winners here lead with Battle Royale + Racing, priced around $25.
When they shipped: The similar games span 2016 to 2022, and none of them 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 52 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
Stumble Guys 2021	Est. copies ≈ 3.4M–5.6M 2.0x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	139k reviews Very Positive	Free to PlayBattle Royale
Totally Accurate Battle Simulator 2021	Est. copies ≈ 3.8M–6.2M 2.2x vs typical SteamSpy 2M–5M	Est. revenue $21.0M–$56.6M after Steam's cut $38.3M–$87.1M before Steam's cut	$19.99	154k reviews Overwhelmingly Positive	SandboxSimulation
Planet Coaster 2016	Est. copies ≈ 3.0M–4.9M SteamSpy 2M–5M	Est. revenue $37.2M–$100.0M after Steam's cut $67.6M–$153.8M before Steam's cut	$44.99	72k reviews Very Positive	SimulationBuilding
Five Nights at Freddy's: Security Breach 2021	Est. copies ≈ 1.7M–2.8M SteamSpy 1M–2M	Est. revenue $19.1M–$51.4M after Steam's cut $34.8M–$79.1M before Steam's cut	$39.99	70k reviews Very Positive	HorrorSingleplayer
PowerWash Simulator 2022	Est. copies ≈ 1.5M–2.4M SteamSpy 1M–2M	Est. revenue $10.0M–$27.0M after Steam's cut $18.3M–$41.6M before Steam's cut	$24.99	59k reviews Overwhelmingly Positive	CasualRelaxing
ULTRAKILL 2020	Est. copies ≈ 6.1M–9.9M 3.5x vs typical SteamSpy 5M–10M	Est. revenue $50.2M–$134.8M after Steam's cut $91.2M–$207.4M before Steam's cut	$29.99	245k reviews Overwhelmingly Positive	Boomer ShooterFast-Paced
Minion Masters 2019	Est. copies ≈ 1.9M–3.1M SteamSpy 500k–1M	Est. revenue Free	Free	65k reviews Very Positive	PvETrading Card Game
A Dance of Fire and Ice 2019	Est. copies ≈ 2.4M–3.9M SteamSpy 2M–5M	Est. revenue $4.0M–$10.7M after Steam's cut $7.2M–$16.5M before Steam's cut	$5.99	84k reviews Very Positive	RhythmMusic