How much revenue did Only a Billion?! make?

$81–$220 after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Only a Billion?! sell?

Q: How many copies did Only a Billion?! sell?

74 to 121 copies, based on its 3 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 74–121; $81–$220 after Steam's cut $148–$338 before Steam's cut; from 3 reviews (3 user reviews); Only 3 reviews so far, so that range swings on one or two people. Read it as a hint, not a measurement.

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 Only a Billion?! and predicted how it would do from its 8 similar games. Every figure here, including Only a Billion?!'s, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 32k–115k

best case 1.1M (Touhou Mystia's Izakaya)

Games like Only a Billion?!

A typical game among these

≈ 32k–115k copies

≈ $59k–$178k after Steam's cut

from ~1k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

6 of the 8 similar games are hits.

Best case: Touhou Mystia's Izakaya at ≈ 815k–1.3M copies, ≈ $1.3M–$3.6M after Steam's cut.

What their first month looked like

About half the games that made it here had over 449 reviews in their first month; the range was 190 to 5k.

The genre you'd be entering

These games: The similar games share Clicker (7 of 8) and Simulation (7 of 8).
The winners: Winners here lead with Simulation + Time Management, priced around $6.
When they shipped: 5 of the 8 similar games shipped in the last two years. You'd be launching into a busy stretch.

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 of about 31, 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
Widget Inc. 2024	Est. copies ≈ 19k–31k SteamSpy 20k–50k	Est. revenue $27k–$71k after Steam's cut $48k–$110k before Steam's cut	$4.99	779 reviews Very Positive	ClickerAutomation
Firestone – Idle Clicker Online RPG 2024	Est. copies ≈ 174k–282k 5.1x vs typical SteamSpy 500k–1M	Est. revenue Free	Free	7k reviews Mostly Positive	IdlerClicker
xiuzhen idle 2025	Est. copies ≈ 59k–96k 1.8x vs typical SteamSpy 100k–200k	Est. revenue $98k–$263k after Steam's cut $178k–$404k before Steam's cut	$5.99	2k reviews Mostly Positive	IdlerIndie
Incremental Cubes 2021	Est. copies ≈ 25k–41k SteamSpy 100k–200k	Est. revenue Free	Free	1k reviews Mixed	IdlerSimulation
Capybara Spa 2022	Est. copies ≈ 42k–69k SteamSpy 50k–100k	Est. revenue $93k–$249k after Steam's cut $169k–$384k before Steam's cut	$7.99	2k reviews Overwhelmingly Positive	SimulationCasual
Touhou Mystia's Izakaya 2021	Est. copies ≈ 815k–1.3M 24x vs typical SteamSpy 500k–1M	Est. revenue $1.3M–$3.6M after Steam's cut $2.4M–$5.6M before Steam's cut	$5.99	33k reviews Overwhelmingly Positive	Pixel GraphicsCasual
Fantasy Aquarium 2024	Est. copies ≈ 25k–41k SteamSpy 20k–50k	Est. revenue $48k–$130k after Steam's cut $88k–$199k before Steam's cut	$6.99	1k reviews Mostly Positive	CasualIdler
ROGUE LIGHT DECK BUILDER 2025	Est. copies ≈ 23k–38k SteamSpy 20k–50k	Est. revenue $26k–$69k after Steam's cut $47k–$106k before Steam's cut	$3.99	940 reviews Very Positive	Time ManagementClicker