How many copies did Deepest Sword sell?

270k to 440k copies, based on its 11k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Deepest Sword make?

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

How big is Deepest Sword?

Estimated owners: ≈ 270k–440k; from 11k 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 Deepest Sword out and predicted the genre from its 8 similar games. Every figure here, including Deepest Sword's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 528k–699k

best case 5.9M (Celeste)

Games like Deepest Sword

The middle of these games

≈ 528k–699k copies

≈ $4.1M–$5.9M after Steam's cut

from ~15k 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: Celeste at ≈ 4.5M–7.3M copies, ≈ $24.6M–$66.0M after Steam's cut. A breakout hit, far above a typical game.

What it took to get here

About half the games that made it here had over 6k reviews in their first month; the spread ran 3k to 11k.

The genre you'd be entering

Your set: Your set clusters on 2D Platformer (5 of 8) and Platformer (5 of 8).
The winners: Winners here lead with 2D Platformer, priced around $15. The breakout hits carry Precision Platformer + 2D Platformer; a typical game here doesn't.
The era: The games you compared span 2010 to 2023, 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
Blasphemous 2 2023	Est. copies ≈ 533k–865k SteamSpy 500k–1M	Est. revenue $4.4M–$11.8M after Steam's cut $8.0M–$18.2M before the cut	$29.99	21k reviews Very Positive	CombatFantasy
Momodora: Reverie Under The Moonlight 2016	Est. copies ≈ 495k–805k SteamSpy 200k–500k	Est. revenue $1.4M–$3.7M after Steam's cut $2.5M–$5.6M before the cut	$9.99	12k reviews Very Positive	Metroidvania2D Platformer
The Messenger 2018	Est. copies ≈ 402k–653k SteamSpy 500k–1M	Est. revenue $2.2M–$5.9M after Steam's cut $4.0M–$9.1M before the cut	$19.99	13k reviews Very Positive	RetroPlatformer
SANABI 2023	Est. copies ≈ 1.1M–1.8M 3.0x vs typical SteamSpy 500k–1M	Est. revenue $4.6M–$12.4M after Steam's cut $8.4M–$19.0M before the cut	$14.99	45k reviews Overwhelmingly Positive	Pixel GraphicsStory Rich
Celeste 2018	Est. copies ≈ 4.5M–7.3M 9.7x vs typical SteamSpy 2M–5M	Est. revenue $24.6M–$66.0M after Steam's cut $44.7M–$101.6M before the cut	$19.99	147k reviews Overwhelmingly Positive	Precision PlatformerDifficult
Super Meat Boy 2010	Est. copies ≈ 2.5M–4.0M 2.6x vs typical SteamSpy 2M–5M	Est. revenue $10.2M–$27.4M after Steam's cut $18.5M–$42.1M before the cut	$14.99	39k reviews Very Positive	Precision Platformer Platformer
Neon Abyss 2020	Est. copies ≈ 586k–952k 1.6x vs typical SteamSpy 2M–5M	Est. revenue $3.2M–$8.7M after Steam's cut $5.9M–$13.3M before the cut	$19.99	24k reviews Very Positive	Rogue-like Platformer
Rogue Legacy 2 2022	Est. copies ≈ 375k–610k SteamSpy 1M–2M	Est. revenue $2.6M–$6.9M after Steam's cut $4.7M–$10.7M before the cut	$24.99	15k reviews Very Positive	ArcadeMetroidvania