How much revenue did Megaquarium make?

$791k–$2.1M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Megaquarium sell?

Q: How many copies did Megaquarium sell?

115k to 187k copies, based on its 4k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 115k–187k; $791k–$2.1M after Steam's cut $1.4M–$3.3M before the cut; from 4k reviews (Overwhelmingly 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 Megaquarium out and predicted the genre from its 8 similar games. Every figure here, including Megaquarium's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 7.6M–18.7M

best case 104.7M (Garry's Mod)

Games like Megaquarium

The middle of these games

≈ 7.6M–18.7M copies

≈ $89.0M–$282.5M after Steam's cut

from ~292k 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: Garry's Mod at ≈ 79.8M–129.6M copies, ≈ $219.1M–$589.2M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Sandbox (6 of 8) and Building (4 of 8).
The winners: Winners here lead with Sandbox + Moddable, priced around $12. The breakout hits carry Multiplayer + Casual + Funny; a typical game here doesn't.
The era: The games you compared span 2006 to 2020, 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
House Flipper 2018	Est. copies ≈ 3.4M–5.5M too small to compare SteamSpy 2M–5M	Est. revenue $23.3M–$62.7M after Steam's cut $42.4M–$96.5M before the cut	$24.99	112k reviews Very Positive	SimulationDesign & Illustration
Garry's Mod 2006	Est. copies ≈ 79.8M–129.6M 4.3x vs typical SteamSpy 20M–50M	Est. revenue $219.1M–$589.2M after Steam's cut $398.4M–$906.5M before the cut	$9.99	1.3M reviews Overwhelmingly Positive	SandboxModdable
People Playground 2019	Est. copies ≈ 9.1M–14.9M SteamSpy 5M–10M	Est. revenue $25.1M–$67.5M after Steam's cut $45.7M–$103.9M before the cut	$9.99	317k reviews Overwhelmingly Positive	SandboxGore
The Sims™ 4 2020	Est. copies ≈ 5.0M–8.0M SteamSpy 10M–20M	Est. revenue Free	Free	200k reviews Very Positive	Life SimCharacter Customization
Stardew Valley 2016	Est. copies ≈ 43.2M–70.1M 3.6x vs typical SteamSpy 20M–50M	Est. revenue $177.9M–$478.3M after Steam's cut $323.4M–$735.8M before the cut	$14.99	1.0M reviews Overwhelmingly Positive	Farming SimPixel Graphics
Sid Meier’s Civilization® VI 2016	Est. copies ≈ 15.8M–25.6M SteamSpy 10M–20M	Est. revenue $259.9M–$698.7M after Steam's cut $472.5M–$1074.9M before the cut	$59.99	379k reviews Very Positive	StrategyTurn-Based Strategy
Factorio 2020	Est. copies ≈ 5.8M–9.4M SteamSpy 5M–10M	Est. revenue $56.0M–$150.4M after Steam's cut $101.7M–$231.4M before the cut	$35.00	234k reviews Overwhelmingly Positive	AutomationBase-Building
Cities: Skylines 2015	Est. copies ≈ 14.3M–23.2M SteamSpy 10M–20M	Est. revenue $117.6M–$316.2M after Steam's cut $213.8M–$486.4M before the cut	$29.99	292k reviews Very Positive	City Builder Simulation