How many copies did Grimm's Hollow sell?

421k to 684k copies, based on its 15k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Grimm's Hollow make?

Grimm's Hollow is free to play, so there is no copy-sales revenue to estimate.

How big is Grimm's Hollow?

Estimated players who have it: ≈ 421k–684k; from 15k 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 Grimm's Hollow and predicted how it would do from its 8 similar games. Every figure here, including Grimm's Hollow's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 923k–2.7M

best case 9.9M (RimWorld)

Games like Grimm's Hollow

A typical game among these

≈ 923k–2.7M copies

≈ $4.9M–$6.1M after Steam's cut

from ~30k 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.

No genre covers most of these similar games. The closest is Management (3 of 8), so its genre is hard to place.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: RimWorld at ≈ 7.6M–12.3M copies, ≈ $72.7M–$195.4M 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 3k reviews in their first month; the range was 55 to 26k.

The genre you'd be entering

These games: The similar games share Management (3 of 8) and MMORPG (3 of 8).
The winners: Winners here lead with Colony Sim + Base-Building, priced around $35. The breakout hits carry Colony Sim + Survival + Base-Building; a typical game here doesn't.
When they shipped: The similar games span 2012 to 2025, 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 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
Realm of the Mad God Exalt 2012	Est. copies ≈ 3.0M–4.9M 1.6x vs typical SteamSpy 500k–1M	Est. revenue Free	Free	48k reviews Very Positive	Pixel GraphicsMMORPG
RimWorld 2018	Est. copies ≈ 7.6M–12.3M 8.3x vs typical SteamSpy 5M–10M	Est. revenue $72.7M–$195.4M after Steam's cut $132.2M–$300.7M before Steam's cut	$34.99	249k reviews Overwhelmingly Positive	Colony SimBase-Building
IdleOn - The Incremental MMO 2025	Est. copies ≈ 741k–1.2M SteamSpy 1M–2M	Est. revenue Free	Free	30k reviews Mostly Positive	IdlerPixel Graphics
Trove 2015	Est. copies ≈ 4.5M–7.4M 3.1x vs typical SteamSpy 10M–20M	Est. revenue Free	Free	93k reviews Mostly Positive	Free to PlayOpen World
Streets of Rogue 2019	Est. copies ≈ 665k–1.1M SteamSpy 1M–2M	Est. revenue $3.7M–$9.8M after Steam's cut $6.7M–$15.1M before Steam's cut	$19.99	23k reviews Overwhelmingly Positive	Rogue-liteAction Roguelike
POLYGON 2020	Est. copies ≈ 918k–1.5M SteamSpy 1M–2M	Est. revenue Free	Free	37k reviews Mostly Positive	Free to PlayFPS
Kingdom: Classic 2015	Est. copies ≈ 1.1M–1.8M SteamSpy 2M–5M	Est. revenue Free	Free	23k reviews Very Positive	Free to PlayStrategy
There Is No Game: Wrong Dimension 2020	Est. copies ≈ 648k–1.1M SteamSpy 500k–1M	Est. revenue $2.3M–$6.2M after Steam's cut $4.2M–$9.6M before Steam's cut	$12.99	26k reviews Overwhelmingly Positive	IndieAdventure