How much revenue did Sonic CD make?

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

How many copies did Sonic CD sell?

Q: How many copies did Sonic CD sell?

348k to 565k copies, based on its 6k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 348k–565k; from 6k 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 Sonic CD out and predicted the genre from its 8 similar games. Every figure here, including Sonic CD's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 287k–390k

best case 1.3M (Sonic Mania)

Games like Sonic CD

The middle of these games

≈ 287k–390k copies

≈ $1.1M–$1.5M after Steam's cut

from ~4k 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.

Your picks lean toward this genre's biggest survivors; the typical figure reads from its ordinary successes.

Best case: Sonic Mania at ≈ 991k–1.6M copies, ≈ $5.5M–$14.7M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Platformer (8 of 8) and Classic (4 of 8).
The winners: Winners here lead with Platformer, priced around $15. The breakout hits carry Fast-Paced + 3D Platformer; a typical game here doesn't.
The era: The games you compared span 2006 to 2018, 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 38 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
Sonic Mania 2017	Est. copies ≈ 991k–1.6M 7.0x vs typical SteamSpy 1M–2M	Est. revenue $5.5M–$14.7M after Steam's cut $9.9M–$22.5M before the cut	$19.99	29k reviews Very Positive	Great Soundtrack2D
Crash Bandicoot™ N. Sane Trilogy 2018	Est. copies ≈ 673k–1.1M 5.4x vs typical SteamSpy 1M–2M	Est. revenue $7.4M–$19.9M after Steam's cut $13.5M–$30.6M before the cut	$39.99	22k reviews Very Positive	3D PlatformerRemake
Sonic Generations Collection 2011	Est. copies ≈ 1.6M–2.6M 6.2x vs typical SteamSpy 500k–1M	Est. revenue Free	Free	25k reviews Very Positive	PlatformerGreat Soundtrack
Prince of Persia: Warrior Within™ 2008	Est. copies ≈ 260k–423k SteamSpy 200k–500k	Est. revenue $715k–$1.9M after Steam's cut $1.3M–$3.0M before the cut	$9.99	4k reviews Very Positive	ActionAdventure
Prince of Persia®: The Sands of Time 2008	Est. copies ≈ 333k–542k SteamSpy 500k–1M	Est. revenue $916k–$2.5M after Steam's cut $1.7M–$3.8M before the cut	$9.99	5k reviews Very Positive	ActionAdventure
Psychonauts 2006	Est. copies ≈ 1.2M–2.0M 4.7x vs typical SteamSpy 1M–2M	Est. revenue $3.3M–$9.0M after Steam's cut $6.1M–$13.8M before the cut	$9.99	19k reviews Very Positive	PlatformerComedy
Sonic Adventure DX 2011	Est. copies ≈ 1.2M–1.9M 4.5x vs typical SteamSpy 500k–1M	Est. revenue $2.6M–$7.0M after Steam's cut $4.7M–$10.7M before the cut	$7.99	19k reviews Very Positive	PlatformerGreat Soundtrack
Prince of Persia: The Two Thrones™ 2008	Est. copies ≈ 177k–287k SteamSpy 200k–500k	Est. revenue $485k–$1.3M after Steam's cut $882k–$2.0M before the cut	$9.99	3k reviews Very Positive	ActionAdventure