How much revenue did Thief make?

$7.4M–$19.9M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Thief sell?

Q: How many copies did Thief sell?

1.3M to 2.2M copies, based on its 24k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.3M–2.2M; $7.4M–$19.9M after Steam's cut $13.4M–$30.6M before the cut; from 24k reviews (Mostly 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 Thief out and predicted the genre from its 8 similar games. Every figure here, including Thief's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 12.1M–41.2M

best case 124.1M (PUBG: BATTLEGROUNDS)

Games like Thief

The middle of these games

≈ 12.1M–41.2M copies

≈ $120.5M–$311.5M after Steam's cut

from ~421k 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.

No genre covers most of your similar games. The closest is Co-op (4 of 8), so the genre you lead with is still undecided.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: PUBG: BATTLEGROUNDS at ≈ 94.5M–153.6M copies. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Co-op (4 of 8) and Open World (4 of 8).
The winners: Winners here lead with Survival + Shooter. The breakout hits carry Shooter + Battle Royale + PvP; a typical game here doesn't.
The era: The games you compared span 2013 to 2025, and 2 of your 8 shipped in the last two years.

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 79 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
Schedule I 2025	Est. copies ≈ 7.8M–12.7M SteamSpy 10M–20M	Est. revenue $42.9M–$115.2M after Steam's cut $77.9M–$177.3M before the cut	$19.99	314k reviews Overwhelmingly Positive	Simulation Co-op
The Elder Scrolls V: Skyrim Special Edition 2016	Est. copies ≈ 15.6M–25.4M SteamSpy 5M–10M	Est. revenue $172.0M–$462.5M after Steam's cut $312.8M–$711.6M before the cut	$39.99	376k reviews Very Positive	Open WorldRPG
Dying Light 2015	Est. copies ≈ 24.1M–39.2M SteamSpy 10M–20M	Est. revenue $165.8M–$445.8M after Steam's cut $301.5M–$685.8M before the cut	$24.99	494k reviews Overwhelmingly Positive	ZombiesSurvival Horror
R.E.P.O. 2025	Est. copies ≈ 10.4M–17.0M SteamSpy 10M–20M	Est. revenue $28.7M–$77.0M after Steam's cut $52.1M–$118.5M before the cut	$9.99	421k reviews Overwhelmingly Positive	HorrorOnline Co-Op
Hunt: Showdown 1896 2019	Est. copies ≈ 8.0M–13.0M SteamSpy 10M–20M	Est. revenue $87.8M–$236.2M after Steam's cut $159.7M–$363.4M before the cut	$39.99	277k reviews Mostly Positive	Open WorldExtraction Shooter
PUBG: BATTLEGROUNDS 2017	Est. copies ≈ 94.5M–153.6M 6.5x vs typical SteamSpy 100M–200M	Est. revenue Free	Free	2.7M reviews Mixed	SurvivalShooter
PAYDAY 2 2013	Est. copies ≈ 42.6M–69.2M 1.6x vs typical SteamSpy 20M–50M	Est. revenue $117.1M–$314.7M after Steam's cut $212.8M–$484.2M before the cut	$9.99	674k reviews Very Positive	Co-opAction
Dead by Daylight 2016	Est. copies ≈ 38.7M–62.9M 2.2x vs typical SteamSpy 20M–50M	Est. revenue $212.7M–$571.8M after Steam's cut $386.7M–$879.7M before the cut	$19.99	930k reviews Mostly Positive	HorrorMultiplayer