How much revenue did Halcyon Days make?

$4k–$10k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Halcyon Days sell?

Q: How many copies did Halcyon Days sell?

818 to 1k copies, based on its 33 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 818–1k; $4k–$10k after Steam's cut $7k–$15k before Steam's cut; from 33 reviews (Mostly 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 Halcyon Days and predicted how it would do from its 8 similar games. Every figure here, including Halcyon Days's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 53k–92k

best case 930k (Sonic Frontiers)

Games like Halcyon Days

A typical game among these

≈ 53k–92k copies

≈ $289k–$1.3M after Steam's cut

from ~2k 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: Sonic Frontiers at ≈ 709k–1.2M copies, ≈ $7.8M–$21.0M after Steam's cut. 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 705 reviews in their first month; the range was 54 to 11k.

The genre you'd be entering

These games: The similar games share Action-Adventure (6 of 8) and 3D Platformer (4 of 8).
The winners: Winners here lead with 3D Platformer + Action-Adventure, priced around $30. The breakout hits carry 3D Platformer + Souls-like + Cartoony; a typical game here doesn't.
When they shipped: The similar games span 2015 to 2026, 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
Gurumin: A Monstrous Adventure 2015	Est. copies ≈ 55k–89k SteamSpy 100k–200k	Est. revenue $150k–$403k after Steam's cut $272k–$619k before Steam's cut	$9.99	1k reviews Very Positive	Action RPGAction
Death's Door 2021	Est. copies ≈ 552k–897k 10x vs typical SteamSpy 500k–1M	Est. revenue $3.0M–$8.2M after Steam's cut $5.5M–$12.6M before Steam's cut	$19.99	22k reviews Very Positive	CuteSouls-like
Soulstice 2022	Est. copies ≈ 70k–113k SteamSpy 100k–200k	Est. revenue $767k–$2.1M after Steam's cut $1.4M–$3.2M before Steam's cut	$39.99	3k reviews Mostly Positive	Hack and SlashSpectacle fighter
Sonic Frontiers 2022	Est. copies ≈ 709k–1.2M 13x vs typical SteamSpy 500k–1M	Est. revenue $7.8M–$21.0M after Steam's cut $14.2M–$32.2M before Steam's cut	$39.99	29k reviews Very Positive	Great SoundtrackOpen World
Raji: An Ancient Epic 2020	Est. copies ≈ 71k–115k SteamSpy under 20k	Est. revenue $487k–$1.3M after Steam's cut $886k–$2.0M before Steam's cut	$24.99	3k reviews Very Positive	RelaxingMythology
Made in Abyss: Binary Star Falling into Darkness 2022	Est. copies ≈ 70k–113k SteamSpy 50k–100k	Est. revenue $1.2M–$3.1M after Steam's cut $2.1M–$4.8M before Steam's cut	$59.99	3k reviews Mostly Positive	ActionAdventure
Spirit Realm 2024	Est. copies ≈ 35k–58k SteamSpy 20k–50k	Est. revenue $177k–$477k after Steam's cut $322k–$733k before Steam's cut	$18.18	1k reviews Mostly Positive	Early AccessRPG
沙雕之路 2026	Est. copies ≈ 27k–44k SteamSpy under 20k	Est. revenue $74k–$200k after Steam's cut $135k–$308k before Steam's cut	$10.00	1k reviews Overwhelmingly Positive	IndieRPG