How much revenue did They Are Billions make?

$12.2M–$32.7M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did They Are Billions sell?

Q: How many copies did They Are Billions sell?

1.5M to 2.4M copies, based on its 51k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.5M–2.4M; $12.2M–$32.7M after Steam's cut $22.1M–$50.3M before the cut; from 51k 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 They Are Billions out and predicted the genre from its 8 similar games. Every figure here, including They Are Billions's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 10.6M–24.3M

best case 71.5M (Left 4 Dead 2)

The Zombies genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 10.6M–24.3M copies

≈ $175.4M–$307.7M after Steam's cut

from ~403k reviews

Best case

≈ 54.5M–88.5M copies

Left 4 Dead 2 · ≈ $149.6M–$402.3M after Steam's cut

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Zombies (8 of 8) and Survival (6 of 8).
The winners: Winners here lead with Zombies + Co-op, priced around $10. The breakout hits carry FPS + Co-op + Shooter; a typical game here doesn't.
The era: The games you compared span 2009 to 2024, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Project Zomboid 2013	Est. copies ≈ 24.0M–38.9M SteamSpy 10M–20M	Est. revenue $131.7M–$354.0M after Steam's cut $239.4M–$544.7M before the cut	$19.99	461k reviews Very Positive	SurvivalZombies
Left 4 Dead 2 2009	Est. copies ≈ 54.5M–88.5M 2.6x vs typical SteamSpy 50M–100M	Est. revenue $149.6M–$402.3M after Steam's cut $272.1M–$618.9M before the cut	$9.99	1.0M reviews Overwhelmingly Positive	ZombiesCo-op
7 Days to Die 2024	Est. copies ≈ 9.7M–15.7M SteamSpy 10M–20M	Est. revenue $119.8M–$322.1M after Steam's cut $217.8M–$495.5M before the cut	$44.99	403k reviews Very Positive	SurvivalZombies
Resident Evil 4 2023	Est. copies ≈ 6.4M–10.4M SteamSpy 5M–10M	Est. revenue $70.4M–$189.2M after Steam's cut $127.9M–$291.1M before the cut	$39.99	267k reviews Overwhelmingly Positive	HorrorAction
Dying Light 2015	Est. copies ≈ 22.8M–37.1M SteamSpy 10M–20M	Est. revenue $156.7M–$421.4M after Steam's cut $285.0M–$648.3M before the cut	$24.99	492k reviews Overwhelmingly Positive	ZombiesSurvival Horror
Call of Duty®: Black Ops III 2015	Est. copies ≈ 10.7M–17.4M SteamSpy 5M–10M	Est. revenue $177.0M–$475.9M after Steam's cut $321.8M–$732.1M before the cut	$59.99	231k reviews Very Positive	MultiplayerZombies
DayZ 2018	Est. copies ≈ 14.2M–23.0M SteamSpy 10M–20M	Est. revenue $194.6M–$523.2M after Steam's cut $353.8M–$804.9M before the cut	$49.99	466k reviews Mostly Positive	SurvivalOpen World
Resident Evil 2 2019	Est. copies ≈ 6.3M–10.2M SteamSpy 5M–10M	Est. revenue $69.1M–$185.7M after Steam's cut $125.5M–$285.6M before the cut	$39.99	218k reviews Overwhelmingly Positive	ZombiesSurvival Horror