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How many copies did Thief Simulator 2 sell?

Estimated copies sold
≈ 170k–276k
$934k–$2.5M after Steam's cut $1.7M–$3.9M before Steam's cut
from 7k reviews (Very Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

Did the prediction match what actually happened?

We hid Thief Simulator 2 and predicted how it would do from its 8 similar games. Every figure here, including Thief Simulator 2's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 1.0M–5.1M
best case 56.0M (PAYDAY 2)
Games like Thief Simulator 2

A typical game among these

≈ 1.0M–5.1M copies

≈ $4.6M–$29.8M after Steam's cut

from ~37k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

All 8 of the similar games are hits.

No genre covers most of these similar games. The closest is Crime (4 of 8), so its genre is hard to place.

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: PAYDAY 2 at ≈ 42.7M–69.3M copies, ≈ $117.2M–$315.1M after Steam's cut.

What their first month looked like
About half the games that made it here had over 7k reviews in their first month; the range was 2k to 153k.
The genre you'd be entering
These games
The similar games share Crime (4 of 8) and Co-op (3 of 8).
The winners
Winners here lead with Co-op + FPS, priced around $10.
When they shipped
The similar games span 2007 to 2025, and 2 of the 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

Schedule I
2025
Est. copies
≈ 7.9M–12.8M
8.5x vs typical
SteamSpy 10M–20M
Est. revenue
$43.4M–$116.6M after Steam's cut $78.8M–$179.4M before Steam's cut
$19.99
318k reviews
Overwhelmingly Positive
Due Process
2020
Est. copies
≈ 212k–345k
SteamSpy 500k–1M
Est. revenue
$583k–$1.6M after Steam's cut $1.1M–$2.4M before Steam's cut
$9.99
9k reviews
Very Positive
Early AccessAdventure
PAYDAY 2
2013
Est. copies
≈ 42.7M–69.3M
18x vs typical
SteamSpy 20M–50M
Est. revenue
$117.2M–$315.1M after Steam's cut $213.1M–$484.7M before Steam's cut
$9.99
675k reviews
Very Positive
Co-opAction
Crime Scene Cleaner
2024
Est. copies
≈ 858k–1.4M
SteamSpy 500k–1M
Est. revenue
$7.1M–$19.0M after Steam's cut $12.9M–$29.3M before Steam's cut
$29.99
35k reviews
Overwhelmingly Positive
SimulationCrime
NEKOPARA Vol. 2
2016
Est. copies
≈ 535k–870k
SteamSpy 500k–1M
Est. revenue
$1.5M–$4.0M after Steam's cut $2.7M–$6.1M before Steam's cut
$9.99
13k reviews
Overwhelmingly Positive
AnimeSexual Content
Thief Simulator
2018
Est. copies
≈ 1.2M–2.0M
SteamSpy 1M–2M
Est. revenue
$6.7M–$17.9M after Steam's cut $12.1M–$27.6M before Steam's cut
$19.99
40k reviews
Very Positive
PAYDAY™ The Heist
2011
Est. copies
≈ 2.6M–4.2M
SteamSpy 2M–5M
Est. revenue
$7.1M–$19.1M after Steam's cut $12.9M–$29.5M before Steam's cut
$9.99
41k reviews
Very Positive
FPSAction
Hitman: Blood Money
2007
Est. copies
≈ 1.0M–1.7M
SteamSpy 2M–5M
Est. revenue
$2.8M–$7.5M after Steam's cut $5.1M–$11.6M before Steam's cut
$9.99
16k reviews
Very Positive
StealthAction

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