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 the cut; from 33 reviews (Mostly 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 Halcyon Days out and predicted the genre from its 8 similar games. Every figure here, including Halcyon Days's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 52k–90k

best case 924k (Sonic Frontiers)

Games like Halcyon Days

The middle of these games

≈ 52k–90k copies

≈ $285k–$1.3M after Steam's cut

from ~2k 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: Sonic Frontiers at ≈ 704k–1.1M copies, ≈ $7.7M–$20.8M 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 705 reviews in their first month; the spread ran 54 to 11k.

The genre you'd be entering

Your set: Your set clusters on 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.
The era: The games you compared span 2015 to 2026, and 2 of your 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 ≈ 54k–88k SteamSpy 100k–200k	Est. revenue $149k–$400k after Steam's cut $271k–$616k before the cut	$9.99	1k reviews Very Positive	Action RPGAction
Death's Door 2021	Est. copies ≈ 547k–888k 11x vs typical SteamSpy 500k–1M	Est. revenue $3.0M–$8.1M after Steam's cut $5.5M–$12.4M before the cut	$19.99	22k reviews Very Positive	CuteSouls-like
Soulstice 2022	Est. copies ≈ 69k–111k SteamSpy 100k–200k	Est. revenue $754k–$2.0M after Steam's cut $1.4M–$3.1M before the cut	$39.99	3k reviews Mostly Positive	Hack and SlashSpectacle fighter
Sonic Frontiers 2022	Est. copies ≈ 704k–1.1M 14x vs typical SteamSpy 500k–1M	Est. revenue $7.7M–$20.8M after Steam's cut $14.1M–$32.0M before the cut	$39.99	28k reviews Very Positive	Great SoundtrackOpen World
Raji: An Ancient Epic 2020	Est. copies ≈ 70k–114k SteamSpy under 20k	Est. revenue $483k–$1.3M after Steam's cut $878k–$2.0M before the cut	$24.99	3k reviews Very Positive	RelaxingMythology
Made in Abyss: Binary Star Falling into Darkness 2022	Est. copies ≈ 69k–112k SteamSpy 50k–100k	Est. revenue $1.1M–$3.1M after Steam's cut $2.1M–$4.7M before the cut	$59.99	3k reviews Mostly Positive	ActionAdventure
Spirit Realm 2024	Est. copies ≈ 34k–56k SteamSpy 20k–50k	Est. revenue $172k–$463k after Steam's cut $313k–$712k before the 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–$307k before the cut	$10.00	1k reviews Overwhelmingly Positive	IndieRPG