How much revenue did Undertale make?

$42.2M–$113.4M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Undertale sell?

Q: How many copies did Undertale sell?

15.4M to 25.0M copies, based on its 331k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 15.4M–25.0M; $42.2M–$113.4M after Steam's cut $76.7M–$174.5M before the cut; from 331k 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 Undertale out and predicted the genre from its 8 similar games. Every figure here, including Undertale's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 35.0M–46.8M

best case 126.0M (Grand Theft Auto V Legacy)

The Open World genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 35.0M–46.8M copies

≈ $436.0M–$807.1M after Steam's cut

from ~1.0M reviews

Best case

≈ 96.0M–156.0M copies

Grand Theft Auto V Legacy

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Open World (5 of 8) and Mature (3 of 8).
The winners: Winners here lead with Open World + Crime, priced around $40. The breakout hits carry Crime + Automobile Sim + Third Person; a typical game here doesn't.
The era: The games you compared span 2015 to 2024, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Grand Theft Auto V Legacy 2015	Est. copies ≈ 96.0M–156.0M 2.1x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	2.1M reviews Very Positive	Open WorldAction
The Witcher 3: Wild Hunt 2015	Est. copies ≈ 40.7M–66.2M SteamSpy 20M–50M	Est. revenue $448.1M–$1204.8M after Steam's cut $814.7M–$1853.5M before the cut	$39.99	878k reviews Overwhelmingly Positive	Open WorldRPG
ELDEN RING 2022	Est. copies ≈ 27.5M–44.6M SteamSpy 20M–50M	Est. revenue $453.0M–$1218.0M after Steam's cut $823.7M–$1873.9M before the cut	$59.99	1.1M reviews Very Positive	Souls-likeOpen World
Red Dead Redemption 2 2019	Est. copies ≈ 25.9M–42.1M SteamSpy 10M–20M	Est. revenue $427.1M–$1148.4M after Steam's cut $776.6M–$1766.8M before the cut	$59.99	899k reviews Very Positive	Open WorldStory Rich
Wallpaper Engine 2018	Est. copies ≈ 30.5M–49.6M SteamSpy 20M–50M	Est. revenue $41.9M–$112.5M after Steam's cut $76.1M–$173.1M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
Stardew Valley 2016	Est. copies ≈ 41.0M–66.6M SteamSpy 20M–50M	Est. revenue $169.0M–$454.3M after Steam's cut $307.2M–$698.9M before the cut	$14.99	1.0M reviews Overwhelmingly Positive	Farming SimPixel Graphics
Cyberpunk 2077 2020	Est. copies ≈ 25.4M–41.2M SteamSpy 20M–50M	Est. revenue $418.4M–$1125.0M after Steam's cut $760.8M–$1730.7M before the cut	$59.99	961k reviews Very Positive	CyberpunkOpen World
HELLDIVERS™ 2 2024	Est. copies ≈ 27.6M–44.9M SteamSpy 20M–50M	Est. revenue $303.8M–$816.9M after Steam's cut $552.4M–$1256.8M before the cut	$39.99	1.2M reviews Mostly Positive	Online Co-OpPvE