How many copies did Gravity sell?

2k to 3k copies, based on its 81 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Gravity make?

Gravity is free to play, so there is no copy-sales revenue to estimate.

How big is Gravity?

Estimated players who have it: ≈ 2k–3k; from 81 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 Gravity and predicted how it would do from its 8 similar games. Every figure here, including Gravity's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 2k–12k

best case 1.5M (DDNet)

Games like Gravity

A typical game among these

≈ 2k–12k copies

≈ $3k–$28k after Steam's cut

from ~66 reviews

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

2 of the 8 similar games are hits.

Best case: DDNet at ≈ 1.2M–1.9M copies. It is a breakout hit, far above a typical game.

What their first month looked like

About half the games that made it here had over 40 reviews in their first month; the range was 14 to 749.

Games with under about 100 reviews in month one almost never recover.

The genre you'd be entering

These games: The similar games share 2D Platformer (8 of 8) and Precision Platformer (7 of 8).
The winners: Winners here lead with 2D Platformer + Precision Platformer. The breakout hits carry Online Co-Op + Free to Play + Multiplayer; a typical game here doesn't.
When they shipped: The similar games span 2015 to 2025, and 2 of the 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 61 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
DDNet 2020	Est. copies ≈ 1.2M–1.9M 708x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	47k reviews Very Positive	Online Co-OpFree to Play
JellyCar Worlds 2022	Est. copies ≈ 27k–44k 16x vs typical SteamSpy 50k–100k	Est. revenue $59k–$159k after Steam's cut $108k–$245k before Steam's cut	$7.99	1k reviews Overwhelmingly Positive	Racing2D Platformer
Magical Girl Dash 2023	Est. copies ≈ 1k–2k SteamSpy under 20k	Est. revenue $405–$1k after Steam's cut $737–$2k before Steam's cut	$0.99	60 reviews Very Positive	Precision PlatformerRunner
Exoracer 2024	Est. copies ≈ 2k–3k SteamSpy under 20k	Est. revenue $2k–$6k after Steam's cut $4k–$9k before Steam's cut	$4.99	66 reviews Very Positive	Precision PlatformerDifficult
Tick Hop 2025	Est. copies ≈ 5k–8k 3.1x vs typical SteamSpy under 20k	Est. revenue $4k–$11k after Steam's cut $8k–$17k before Steam's cut	$2.99	207 reviews Mostly Positive	RacingPrecision Platformer
Squirreltopia 2015	Est. copies ≈ 14k–22k 4.3x vs typical SteamSpy 20k–50k	Est. revenue $19k–$51k after Steam's cut $34k–$78k before Steam's cut	$4.99	282 reviews Mostly Positive	2D PlatformerPrecision Platformer
Grocket 2022	Est. copies ≈ 1k–2k SteamSpy under 20k	Est. revenue Free	Free	58 reviews Very Positive	2D PlatformerPixel Graphics
Cloak and Dasher 2020	Est. copies ≈ 1k–2k SteamSpy under 20k	Est. revenue $2k–$5k after Steam's cut $3k–$7k before Steam's cut	$4.99	50 reviews Very Positive	ActionIndie