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How many copies did Prisoner 518 sell?

Estimated copies sold
≈ 794–1k
$2k–$6k after Steam's cut $4k–$9k before Steam's cut
from 32 reviews (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 Prisoner 518 and predicted how it would do from its 8 similar games. Every figure here, including Prisoner 518's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 2k–5k
best case 2.8M (Gorilla Tag)
Games like Prisoner 518

A typical game among these

≈ 2k–5k copies

≈ $6k–$10k after Steam's cut

from ~57 reviews

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

1 of the 8 similar games is a hit.

Best case: Gorilla Tag at ≈ 2.1M–3.5M copies, ≈ $11.7M–$31.6M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like
About half the games that made it here had over 19 reviews in their first month; the range was 1 to 22k.
Games with under about 100 reviews in month one almost never recover.
The genre you'd be entering
These games
The similar games share Psychological Horror (8 of 8) and VR (8 of 8).
The winners
Winners here lead with VR + Psychological Horror, priced around $20. The breakout hits carry Multiplayer + Funny + Parkour; a typical game here doesn't.
When they shipped
Only 1 of the 8 similar games shipped in the last two years. That says more about which games were found than about the market.
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 36 for the oldest, then widened into a range; revenue rides on that estimate times price. Source: GameDiscoverCo (2020) and VG Insights (2021).

Similar games

Gorilla Tag
2023
Est. copies
≈ 2.1M–3.5M
1512x vs typical
SteamSpy 1M–2M
Est. revenue
$11.7M–$31.6M after Steam's cut $21.4M–$48.6M before Steam's cut
$19.99
86k reviews
Very Positive
Dead end Exit 8
2024
Est. copies
≈ 3k–5k
2.3x vs typical
SteamSpy 20k–50k
Est. revenue
$4k–$10k after Steam's cut $7k–$15k before Steam's cut
$3.99
132 reviews
Mostly Positive
ExplorationPsychological Horror
I'm on Observation Duty 3
2020
Est. copies
≈ 9k–15k
6.5x vs typical
SteamSpy 500k–1M
Est. revenue
$8k–$20k after Steam's cut $14k–$31k before Steam's cut
$2.99
370 reviews
Mostly Positive
Nightmare Rooms VR
2022
Est. copies
≈ 25–40
SteamSpy under 20k
Est. revenue
$103–$273 after Steam's cut $187–$420 before Steam's cut
$14.99
1 reviews
1 user reviews
Last Labyrinth
2019
Est. copies
≈ 4k–6k
2.4x vs typical
SteamSpy under 20k
Est. revenue
$32k–$86k after Steam's cut $58k–$132k before Steam's cut
$29.99
134 reviews
Mostly Positive
IndieVR
Stocksynd House
2020
Est. copies
≈ 1k–2k
SteamSpy under 20k
Est. revenue
$3k–$8k after Steam's cut $6k–$13k before Steam's cut
$7.99
57 reviews
Very Positive
VRCinematic
Descending I - House of Nightmares
2021
Est. copies
≈ 1k–2k
SteamSpy 20k–50k
Est. revenue
$3k–$9k after Steam's cut $6k–$14k before Steam's cut
$9.99
50 reviews
Very Positive
AdventureVR
Five Nights: No Escape
2023
Est. copies
≈ 1k–2k
SteamSpy 20k–50k
Est. revenue
$3k–$8k after Steam's cut $6k–$13k before Steam's cut
$9.99
45 reviews
Mixed

Sizing up your own game? See how many copies games in its genre usually sell before you build it.