How many copies did Fallout Shelter sell?

2.8M to 4.6M copies, based on its 82k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Fallout Shelter make?

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

How big is Fallout Shelter?

Estimated owners: ≈ 2.8M–4.6M; from 82k reviews (Very 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 Fallout Shelter out and predicted the genre from its 8 similar games. Every figure here, including Fallout Shelter's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 6.0M–12.6M

best case 34.9M (ARK: Survival Evolved)

The Survival 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

≈ 6.0M–12.6M copies

≈ $57.5M–$142.0M after Steam's cut

from ~242k reviews

Best case

≈ 26.6M–43.2M copies

ARK: Survival Evolved · ≈ $109.6M–$294.7M after Steam's cut

The genre you'd be entering

Your set: Your set clusters on Survival (7 of 8) and Base-Building (6 of 8).
The winners: Winners here lead with Open World Survival Craft + Survival, priced around $15.
The era: The games you compared span 2016 to 2022, 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
ARK: Survival Evolved 2017	Est. copies ≈ 26.6M–43.2M 3.2x vs typical SteamSpy 20M–50M	Est. revenue $109.6M–$294.7M after Steam's cut $199.3M–$453.4M before the cut	$14.99	773k reviews Very Positive	Open World Survival CraftSurvival
Squad 2020	Est. copies ≈ 6.3M–10.3M SteamSpy 2M–5M	Est. revenue $69.8M–$187.6M after Steam's cut $126.9M–$288.6M before the cut	$39.99	240k reviews Very Positive	MilitaryRealistic
RimWorld 2018	Est. copies ≈ 7.4M–12.0M SteamSpy 5M–10M	Est. revenue $71.1M–$191.2M after Steam's cut $129.3M–$294.2M before the cut	$34.99	243k reviews Overwhelmingly Positive	Colony SimBase-Building
Scrap Mechanic 2016	Est. copies ≈ 4.7M–7.7M SteamSpy 2M–5M	Est. revenue $26.0M–$69.8M after Steam's cut $47.2M–$107.4M before the cut	$19.99	118k reviews Very Positive	BuildingSandbox
Grounded 2022	Est. copies ≈ 2.3M–3.7M SteamSpy 2M–5M	Est. revenue $25.1M–$67.4M after Steam's cut $45.6M–$103.7M before the cut	$39.99	95k reviews Very Positive	SurvivalMultiplayer
Raft 2022	Est. copies ≈ 9.0M–14.7M 1.6x vs typical SteamSpy 10M–20M	Est. revenue $49.6M–$133.3M after Steam's cut $90.1M–$205.0M before the cut	$19.99	376k reviews Very Positive	SurvivalMultiplayer
ASTRONEER 2019	Est. copies ≈ 4.0M–6.5M SteamSpy 2M–5M	Est. revenue $32.9M–$88.6M after Steam's cut $59.9M–$136.3M before the cut	$29.99	139k reviews Very Positive	MultiplayerOpen World
Subnautica 2018	Est. copies ≈ 11.5M–18.6M 1.6x vs typical SteamSpy 5M–10M	Est. revenue $94.5M–$254.0M after Steam's cut $171.8M–$390.8M before the cut	$29.99	377k reviews Overwhelmingly Positive	Open World Survival CraftSurvival