How much revenue did ZEPHON make?

$530k–$1.4M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did ZEPHON sell?

Q: How many copies did ZEPHON sell?

48k to 78k copies, based on its 2k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 48k–78k; $530k–$1.4M after Steam's cut $963k–$2.2M before Steam's cut; from 2k 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 ZEPHON and predicted how it would do from its 8 similar games. Every figure here, including ZEPHON's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 239k–1.2M

best case 17.5M (Sid Meier's Civilization® V)

Games like ZEPHON

A typical game among these

≈ 239k–1.2M copies

≈ $3.2M–$13.9M after Steam's cut

from ~13k 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: Sid Meier's Civilization® V at ≈ 13.3M–21.7M copies, ≈ $110.0M–$295.6M after Steam's cut. It is a breakout hit, far above a typical game.

The genre you'd be entering

These games: The similar games share 4X (8 of 8) and Turn-Based (7 of 8).
The winners: Winners here lead with Turn-Based Strategy + Turn-Based, priced around $30. The breakout hits carry Addictive + Historical + Singleplayer; a typical game here doesn't.
When they shipped: The similar games span 2010 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 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
Age of Wonders: Planetfall 2019	Est. copies ≈ 193k–313k SteamSpy 200k–500k	Est. revenue $1.6M–$4.3M after Steam's cut $2.9M–$6.6M before Steam's cut	$29.99	7k reviews Mostly Positive	StrategyTurn-Based Strategy
Sid Meier's Civilization® V 2010	Est. copies ≈ 13.3M–21.7M 16x vs typical SteamSpy 10M–20M	Est. revenue $110.0M–$295.6M after Steam's cut $199.9M–$454.8M before Steam's cut	$29.99	211k reviews Overwhelmingly Positive	Turn-Based StrategyStrategy
Sid Meier's Civilization®: Beyond Earth™ 2014	Est. copies ≈ 1.3M–2.1M 1.7x vs typical SteamSpy 1M–2M	Est. revenue $14.3M–$38.4M after Steam's cut $26.0M–$59.0M before Steam's cut	$39.99	23k reviews Mixed	StrategyTurn-Based Strategy
Age of Wonders III 2014	Est. copies ≈ 745k–1.2M SteamSpy 1M–2M	Est. revenue $6.1M–$16.5M after Steam's cut $11.2M–$25.4M before Steam's cut	$29.99	13k reviews Mostly Positive	StrategyTurn-Based Strategy
ENDLESS Legend™ 2014	Est. copies ≈ 1.1M–1.7M SteamSpy 2M–5M	Est. revenue $8.8M–$23.7M after Steam's cut $16.0M–$36.5M before Steam's cut	$29.99	19k reviews Very Positive	Strategy4X
Scythe: Digital Edition 2018	Est. copies ≈ 116k–189k SteamSpy 200k–500k	Est. revenue $638k–$1.7M after Steam's cut $1.2M–$2.6M before Steam's cut	$19.99	4k reviews Very Positive	Board GameStrategy
Warhammer 40,000: Gladius - Relics of War 2018	Est. copies ≈ 572k–929k SteamSpy 1M–2M	Est. revenue $6.3M–$16.9M after Steam's cut $11.4M–$26.0M before Steam's cut	$39.99	19k reviews Very Positive	StrategyWarhammer 40K
Old World 2022	Est. copies ≈ 171k–279k SteamSpy 200k–500k	Est. revenue $1.9M–$5.1M after Steam's cut $3.4M–$7.8M before Steam's cut	$39.99	7k reviews Very Positive	StrategySimulation