How much revenue did Monster Train make?

$3.9M–$10.5M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Monster Train sell?

Q: How many copies did Monster Train sell?

569k to 924k copies, based on its 23k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 569k–924k; $3.9M–$10.5M after Steam's cut $7.1M–$16.2M before the cut; from 23k reviews (Overwhelmingly 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 Monster Train out and predicted the genre from its 8 similar games. Every figure here, including Monster Train's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.4M–1.7M

best case 8.2M (Slay the Spire)

Games like Monster Train

The middle of these games

≈ 1.4M–1.7M copies

≈ $4.7M–$11.5M after Steam's cut

from ~45k 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: Slay the Spire at ≈ 6.3M–10.2M copies, ≈ $43.2M–$116.1M 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 13k reviews in their first month; the spread ran 1k to 21k.

The genre you'd be entering

Your set: Your set clusters on Card Game (5 of 8) and Deckbuilding (5 of 8).
The winners: Winners here lead with Card Game + Deckbuilding, priced around $20. The breakout hits carry Roguelike Deckbuilder + Rogue-like + Card Game; a typical game here doesn't.
The era: Only 1 of your 8 similar games shipped in the last two years. That says more about your picks than about the market, so add newer similar games to read the timing.

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 36 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
ROUNDS 2021	Est. copies ≈ 1.1M–1.8M SteamSpy 2M–5M	Est. revenue $1.8M–$4.9M after Steam's cut $3.3M–$7.5M before the cut	$5.99	44k reviews Overwhelmingly Positive	MultiplayerFighting
觅长生 2023	Est. copies ≈ 795k–1.3M SteamSpy 1M–2M	Est. revenue $3.3M–$8.8M after Steam's cut $6.0M–$13.5M before the cut	$14.99	32k reviews Very Positive	RPGOpen World
Slay the Spire 2019	Est. copies ≈ 6.3M–10.2M 4.9x vs typical SteamSpy 5M–10M	Est. revenue $43.2M–$116.1M after Steam's cut $78.5M–$178.6M before the cut	$24.99	218k reviews Overwhelmingly Positive	Roguelike DeckbuilderCard Game
Library Of Ruina 2021	Est. copies ≈ 1.1M–1.8M SteamSpy 1M–2M	Est. revenue $9.2M–$24.7M after Steam's cut $16.7M–$38.0M before the cut	$29.99	45k reviews Very Positive	Story RichCard Game
KARDS - The WW2 Card Game 2020	Est. copies ≈ 1.3M–2.1M SteamSpy 2M–5M	Est. revenue Free	Free	51k reviews Mixed	Free to PlayCard Game
Inscryption 2021	Est. copies ≈ 3.7M–6.0M 3.3x vs typical SteamSpy 2M–5M	Est. revenue $20.2M–$54.4M after Steam's cut $36.8M–$83.7M before the cut	$19.99	148k reviews Overwhelmingly Positive	Card BattlerCard Game
Minion Masters 2019	Est. copies ≈ 1.9M–3.1M SteamSpy 500k–1M	Est. revenue Free	Free	65k reviews Very Positive	PvETrading Card Game
Balatro 2024	Est. copies ≈ 4.9M–8.0M 4.4x vs typical SteamSpy 2M–5M	Est. revenue $20.3M–$54.5M after Steam's cut $36.8M–$83.8M before the cut	$14.99	198k reviews Overwhelmingly Positive	Card GameRoguelike Deckbuilder