How much revenue did September 7th make?

$144k–$388k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did September 7th sell?

Q: How many copies did September 7th sell?

75k to 122k copies, based on its 3k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 75k–122k; $144k–$388k after Steam's cut $262k–$596k before the cut; from 3k reviews (Very 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 September 7th out and predicted the genre from its 8 similar games. Every figure here, including September 7th's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.4M–3.1M

best case 5.4M (Firewatch)

Games like September 7th

The middle of these games

≈ 1.4M–3.1M copies

≈ $11.6M–$35.2M after Steam's cut

from ~45k 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: Firewatch at ≈ 4.1M–6.7M copies, ≈ $22.7M–$61.1M after Steam's cut.

What it took to get here

About half the games that made it here had over 4k reviews in their first month; the spread ran 2k to 11k.

The genre you'd be entering

Your set: Your set clusters on Story Rich (6 of 8) and First-Person (5 of 8).
The winners: Winners here lead with Story Rich + Walking Simulator, priced around $20.
The era: The games you compared span 2010 to 2024, and 1 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 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
Mouthwashing 2024	Est. copies ≈ 952k–1.5M SteamSpy 500k–1M	Est. revenue $3.4M–$9.1M after Steam's cut $6.2M–$14.1M before the cut	$12.99	38k reviews Overwhelmingly Positive	Psychological Horror Story Rich
The Stanley Parable: Ultra Deluxe 2022	Est. copies ≈ 893k–1.5M SteamSpy 1M–2M	Est. revenue $6.1M–$16.5M after Steam's cut $11.2M–$25.4M before the cut	$24.99	36k reviews Very Positive	Multiple EndingsComedy
SOMA 2015	Est. copies ≈ 2.6M–4.2M SteamSpy 2M–5M	Est. revenue $21.1M–$56.7M after Steam's cut $38.4M–$87.3M before the cut	$29.99	52k reviews Overwhelmingly Positive	Horror Psychological Horror
Amnesia: The Dark Descent 2010	Est. copies ≈ 2.3M–3.7M SteamSpy 2M–5M	Est. revenue $12.4M–$33.3M after Steam's cut $22.5M–$51.2M before the cut	$19.99	36k reviews Very Positive	HorrorGore
DEATH STRANDING DIRECTOR'S CUT 2022	Est. copies ≈ 1.7M–2.7M SteamSpy 1M–2M	Est. revenue $18.4M–$49.5M after Steam's cut $33.4M–$76.1M before the cut	$39.99	67k reviews Very Positive	Story RichOpen World
Layers of Fear (2016) 2016	Est. copies ≈ 1.2M–1.9M SteamSpy 2M–5M	Est. revenue $6.3M–$17.0M after Steam's cut $11.5M–$26.2M before the cut	$19.99	28k reviews Very Positive	Horror Psychological Horror
What Remains of Edith Finch 2017	Est. copies ≈ 1.8M–2.9M SteamSpy 500k–1M	Est. revenue $10.0M–$26.8M after Steam's cut $18.1M–$41.2M before the cut	$19.99	53k reviews Overwhelmingly Positive	Story RichAtmospheric
Firewatch 2016	Est. copies ≈ 4.1M–6.7M 2.2x vs typical SteamSpy 2M–5M	Est. revenue $22.7M–$61.1M after Steam's cut $41.3M–$93.9M before the cut	$19.99	99k reviews Very Positive	AdventureAtmospheric