How much revenue did Undertale make?

An estimated 41.9M to 112.7M net 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?

An estimated 15.3M to 24.8M copies, based on its 329k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 15.3M–24.8M; $41.9M–$112.7M net $76.2M–$173.4M gross; from 329k 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) 34.9M–46.6M

best case 125.9M (Grand Theft Auto V Legacy)

The Multiplayer lane

A big, proven genre, though hit-driven: most sell around 36.2M copies, while a few break out far above.

A typical game

≈ 36.2M copies

≈ $766.1M after Steam's cut

from ~1000k reviews

Best case

≈ 125.9M copies

Grand Theft Auto V Legacy

from 2.1M reviews

A breakout hit, far above a typical game.

7 of your 8 games sit in the typical range; 1 is a breakout hit far above it.

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Open World + Action, priced around $40.
The breakout hits carry Crime + Automobile Sim + Third Person; a typical game here doesn't.
The games you compared span 2015 to 2024, a lane with a long track record.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
Grand Theft Auto V Legacy 2015	Est. copies ≈ 95.9M–155.8M 2.1x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	2.1M reviews Very Positive	Open WorldAction +6
The Witcher 3: Wild Hunt 2015	Est. copies ≈ 40.6M–66.1M SteamSpy 20M–50M	Est. revenue $447.0M–$1201.9M net $812.8M–$1849.1M gross	$39.99	876k reviews Overwhelmingly Positive	Open WorldRPG +6
ELDEN RING 2022	Est. copies ≈ 27.4M–44.5M SteamSpy 20M–50M	Est. revenue $452.2M–$1215.7M net $822.1M–$1870.3M gross	$59.99	1.1M reviews Very Positive	Souls-likeOpen World +6
Red Dead Redemption 2 2019	Est. copies ≈ 25.7M–41.8M SteamSpy 10M–20M	Est. revenue $424.3M–$1140.9M net $771.5M–$1755.2M gross	$59.99	893k reviews Very Positive	Open WorldStory Rich +6
Wallpaper Engine 2018	Est. copies ≈ 30.4M–49.4M SteamSpy 20M–50M	Est. revenue $41.7M–$112.1M net $75.8M–$172.5M gross	$4.99	1000k reviews Overwhelmingly Positive	MatureUtilities +6
Stardew Valley 2016	Est. copies ≈ 40.8M–66.3M SteamSpy 20M–50M	Est. revenue $168.2M–$452.2M net $305.8M–$695.8M gross	$14.99	1.0M reviews Overwhelmingly Positive	Farming SimPixel Graphics +6
Cyberpunk 2077 2020	Est. copies ≈ 25.2M–40.9M SteamSpy 20M–50M	Est. revenue $415.4M–$1116.7M net $755.2M–$1718.1M gross	$59.99	954k reviews Very Positive	CyberpunkOpen World +6
HELLDIVERS™ 2 2024	Est. copies ≈ 27.6M–44.8M SteamSpy 20M–50M	Est. revenue $303.4M–$815.6M net $551.6M–$1254.8M gross	$39.99	1.1M reviews Mostly Positive	Online Co-OpPvE +6