How many copies did Helltaker sell?

An estimated 3.4M to 5.5M copies, based on its 128k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Helltaker make?

Helltaker is free to play, so there is no copy-sales revenue to estimate.

How big is Helltaker?

Estimated owners: ≈ 3.4M–5.5M; from 128k 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 Helltaker out and predicted the genre from its 8 similar games. Every figure here, including Helltaker's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 674k–15.7M

best case 39.9M (Wallpaper Engine)

The Family Friendly lane

A big, proven genre: most sell around 10.8M copies.

A typical game

≈ 10.8M copies

≈ $80.5M after Steam's cut

from ~221k reviews

Best case

≈ 39.9M copies

Wallpaper Engine · ≈ $76.9M after Steam's cut

from 1000k reviews

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 Mature + Utilities, priced around $5.
None of the games you compared shipped in the last two years; the newest is from 2020. That says more about your picks than about the market, so add newer similar games to read the timing.
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
Doki Doki Literature Club! 2017	Est. copies ≈ 7.7M–12.5M SteamSpy 5M–10M	Est. revenue Free	Free	223k reviews Overwhelmingly Positive	Psychological HorrorVisual Novel +6
Garfield Kart 2015	Est. copies ≈ 655k–1.1M SteamSpy 500k–1M	Est. revenue $899k–$2.4M net $1.6M–$3.7M gross	$4.99	14k reviews Very Positive	Cult ClassicCombat Racing +6
Bloons TD 6 2018	Est. copies ≈ 11.9M–19.3M 1.8x vs typical SteamSpy 2M–5M	Est. revenue $45.6M–$122.7M net $83.0M–$188.7M gross	$13.99	390k reviews Overwhelmingly Positive	Tower DefenseStrategy +6
Fall Guys 2020	Est. copies ≈ 12.4M–20.1M 2.1x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	469k reviews Very Positive	MultiplayerParty Game +6
DOOM 2016	Est. copies ≈ 8.8M–14.3M SteamSpy 5M–10M	Est. revenue $48.2M–$129.7M net $87.7M–$199.5M gross	$19.99	219k reviews Overwhelmingly Positive	FPSGore +6
Wallpaper Engine 2018	Est. copies ≈ 30.4M–49.4M 4.5x vs typical SteamSpy 20M–50M	Est. revenue $41.7M–$112.1M net $75.8M–$172.5M gross	$4.99	1000k reviews Overwhelmingly Positive	MatureUtilities +6
Demon Turf: Trials 2020	Est. copies ≈ 3k–6k SteamSpy 20k–50k	Est. revenue Free	Free	132 reviews Very Positive	AdventureAction +6
Frozen Free Fall: Snowball Fight 2015	Est. copies ≈ 88k–143k SteamSpy 200k–500k	Est. revenue Free	Free	2k reviews Mixed	Free to PlayCasual +6