How many copies did RollerBaller sell?

2k copies, based on its 62 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did RollerBaller make?

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

How big is RollerBaller?

Estimated players who have it: ≈ 2k; from 62 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 RollerBaller and predicted how it would do from its 8 similar games. Every figure here, including RollerBaller's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 354k–713k

best case 9.9M (Forza Horizon 4)

Games like RollerBaller

A typical game among these

≈ 354k–713k copies

≈ $2.4M–$5.7M after Steam's cut

from ~13k reviews

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

All 8 of the similar games are hits.

Best case: Forza Horizon 4 at ≈ 7.5M–12.2M 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 6k reviews in their first month; the range was 2k to 42k.

The genre you'd be entering

These games: The similar games share Racing (8 of 8) and Driving (7 of 8).
The winners: Winners here lead with Racing + Open World, priced around $60. The breakout hits carry Realistic + Multiplayer + Adventure; a typical game here doesn't.
When they shipped: 4 of the 8 similar games shipped in the last two years, so this genre is actively shipping.

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
Forza Horizon 5 2021	Est. copies ≈ 7.0M–11.4M 22x vs typical SteamSpy 5M–10M	Est. revenue $115.3M–$310.1M after Steam's cut $209.7M–$477.1M before Steam's cut	$59.99	282k reviews Very Positive	RacingOpen World
Forza Horizon 4 2021	Est. copies ≈ 7.5M–12.2M 23x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	303k reviews Very Positive	RacingOpen World
Burnout Paradise: The Ultimate Box 2009	Est. copies ≈ 852k–1.4M SteamSpy 500k–1M	Est. revenue Free	Free	13k reviews Very Positive	RacingOpen World
Test Drive Unlimited Solar Crown 2024	Est. copies ≈ 308k–501k SteamSpy 100k–200k	Est. revenue $4.2M–$11.4M after Steam's cut $7.7M–$17.5M before Steam's cut	$49.99	12k reviews Mostly Negative	RacingOpen World
Zombie Driver HD 2012	Est. copies ≈ 257k–418k SteamSpy 200k–500k	Est. revenue $707k–$1.9M after Steam's cut $1.3M–$2.9M before Steam's cut	$9.99	4k reviews Very Positive	ZombiesRacing
NIGHT-RUNNERS™ PROLOGUE 2024	Est. copies ≈ 561k–912k 1.7x vs typical SteamSpy 500k–1M	Est. revenue Free	Free	23k reviews Very Positive	Racing1990's
JDM: Japanese Drift Master 2025	Est. copies ≈ 152k–248k SteamSpy 50k–100k	Est. revenue $1.5M–$3.9M after Steam's cut $2.7M–$6.1M before Steam's cut	$34.99	6k reviews Mostly Positive	RacingSimulation
CarX Street 2024	Est. copies ≈ 489k–794k 1.5x vs typical SteamSpy 200k–500k	Est. revenue $2.7M–$7.2M after Steam's cut $4.9M–$11.1M before Steam's cut	$19.99	20k reviews Mostly Positive	RacingOpen World