How much revenue did They Are Billions make?

$12.2M–$32.8M 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–$32.8M after Steam's cut $22.2M–$50.5M 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) 12.0M–33.6M

best case 87.5M (Left 4 Dead 2)

Games like They Are Billions

The middle of these games

≈ 12.0M–33.6M copies

≈ $204.3M–$349.3M after Steam's cut

from ~434k 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: Left 4 Dead 2 at ≈ 66.7M–108.4M copies, ≈ $183.2M–$492.6M after Steam's cut.

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 era: The games you compared span 2009 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
Project Zomboid 2013	Est. copies ≈ 30.2M–49.0M SteamSpy 10M–20M	Est. revenue $207.3M–$557.3M after Steam's cut $376.9M–$857.4M before the cut	$24.99	477k reviews Very Positive	SurvivalZombies
Left 4 Dead 2 2009	Est. copies ≈ 66.7M–108.4M 2.4x vs typical SteamSpy 50M–100M	Est. revenue $183.2M–$492.6M after Steam's cut $333.1M–$757.9M before the cut	$9.99	1.1M reviews Overwhelmingly Positive	ZombiesCo-op
7 Days to Die 2024	Est. copies ≈ 9.9M–16.1M SteamSpy 10M–20M	Est. revenue $122.7M–$330.0M after Steam's cut $223.1M–$507.7M before the cut	$44.99	400k reviews Very Positive	SurvivalZombies
Resident Evil 4 2023	Est. copies ≈ 6.8M–11.1M SteamSpy 5M–10M	Est. revenue $74.9M–$201.3M after Steam's cut $136.1M–$309.7M before the cut	$39.99	275k reviews Overwhelmingly Positive	HorrorAction
Dying Light 2015	Est. copies ≈ 24.1M–39.2M SteamSpy 10M–20M	Est. revenue $165.8M–$445.8M after Steam's cut $301.5M–$685.8M before the cut	$24.99	494k reviews Overwhelmingly Positive	ZombiesSurvival Horror
Call of Duty®: Black Ops III 2015	Est. copies ≈ 11.4M–18.4M SteamSpy 5M–10M	Est. revenue $187.3M–$503.5M after Steam's cut $340.5M–$774.7M before the cut	$59.99	233k reviews Very Positive	MultiplayerZombies
DayZ 2018	Est. copies ≈ 14.2M–23.1M SteamSpy 10M–20M	Est. revenue $195.8M–$526.4M after Steam's cut $356.0M–$809.9M before the cut	$49.99	469k reviews Mostly Positive	SurvivalOpen World
Resident Evil 2 2019	Est. copies ≈ 6.4M–10.4M SteamSpy 5M–10M	Est. revenue $70.1M–$188.4M after Steam's cut $127.4M–$289.8M before the cut	$39.99	221k reviews Overwhelmingly Positive	ZombiesSurvival Horror