How many copies did Touhou Hero of Ice Fairy: Prologue sell?

85k to 137k copies, based on its 3k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Touhou Hero of Ice Fairy: Prologue make?

Touhou Hero of Ice Fairy: Prologue is free to play, so there is no copy-sales revenue to estimate.

How big is Touhou Hero of Ice Fairy: Prologue?

Estimated players who have it: ≈ 85k–137k; from 3k reviews (Overwhelmingly 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 Touhou Hero of Ice Fairy: Prologue and predicted how it would do from its 8 similar games. Every figure here, including Touhou Hero of Ice Fairy: Prologue's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 90k–912k

best case 6.9M (NieR:Automata™)

Games like Touhou Hero of Ice Fairy: Prologue

A typical game among these

≈ 90k–912k copies

≈ $708k–$11.6M after Steam's cut

from ~6k 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: NieR:Automata™ at ≈ 5.3M–8.6M copies, ≈ $58.2M–$156.5M after Steam's cut.

What their first month looked like

About half the games that made it here had over 2k reviews in their first month; the range was 217 to 9k.

The genre you'd be entering

These games: The similar games share Anime (5 of 8) and Female Protagonist (4 of 8).
The winners: Winners here lead with Story Rich + Female Protagonist, priced around $40.
When they shipped: The similar games span 2015 to 2024, and 1 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
NieR:Automata™ 2017	Est. copies ≈ 5.3M–8.6M 24x vs typical SteamSpy 2M–5M	Est. revenue $58.2M–$156.5M after Steam's cut $105.8M–$240.7M before Steam's cut	$39.99	154k reviews Very Positive	Great SoundtrackStory Rich
Garfield Kart 2015	Est. copies ≈ 691k–1.1M 2.2x vs typical SteamSpy 500k–1M	Est. revenue $948k–$2.5M after Steam's cut $1.7M–$3.9M before Steam's cut	$4.99	14k reviews Very Positive	Cult ClassicCombat Racing
Kagura Survivors: Endless Night 2023	Est. copies ≈ 69k–113k SteamSpy 200k–500k	Est. revenue Free	Free	3k reviews Mostly Positive	Sexual ContentFree to Play
永远消失的幻想乡～ The Disappearing of Gensokyo 2018	Est. copies ≈ 109k–177k SteamSpy 200k–500k	Est. revenue $329k–$885k after Steam's cut $598k–$1.4M before Steam's cut	$10.99	4k reviews Very Positive	AnimeBullet Hell
Touhou Hero of Ice Fairy 2024	Est. copies ≈ 228k–371k SteamSpy 100k–200k	Est. revenue $439k–$1.2M after Steam's cut $798k–$1.8M before Steam's cut	$6.99	9k reviews Overwhelmingly Positive	Bullet HellAnime
Noctuary 2023	Est. copies ≈ 65k–106k SteamSpy 50k–100k	Est. revenue $540k–$1.5M after Steam's cut $982k–$2.2M before Steam's cut	$29.99	3k reviews Very Positive	CuteInteractive Fiction
NieR Replicant™ ver.1.22474487139... 2021	Est. copies ≈ 707k–1.1M 4.5x vs typical SteamSpy 500k–1M	Est. revenue $11.7M–$31.3M after Steam's cut $21.2M–$48.2M before Steam's cut	$59.99	28k reviews Very Positive	Great SoundtrackStory Rich
Touhou: Scarlet Curiosity 2018	Est. copies ≈ 40k–66k SteamSpy 100k–200k	Est. revenue $167k–$449k after Steam's cut $303k–$690k before Steam's cut	$14.99	1k reviews Very Positive	Bullet HellAction