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How many copies did Balrum sell?

Estimated copies sold
≈ 34k–55k
$139k–$373k after Steam's cut $252k–$573k before Steam's cut
from 808 reviews (Mostly 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 Balrum and predicted how it would do from its 8 similar games. Every figure here, including Balrum's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 191k–437k
best case 40.1M (Project Zomboid)
Games like Balrum

A typical game among these

≈ 191k–437k copies

≈ $2.3M–$3.6M after Steam's cut

from ~7k 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.

Best case: Project Zomboid at ≈ 30.5M–49.6M copies, ≈ $209.9M–$564.4M after Steam's cut. It is a breakout hit, far above a typical game.

The genre you'd be entering
These games
The similar games share Open World (5 of 8) and Survival (5 of 8).
The winners
Winners here lead with Survival + Zombies, priced around $25. The breakout hits carry Open World Survival Craft + Sandbox + Post-apocalyptic; a typical game here doesn't.
When they shipped
The similar games span 2013 to 2026, 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

Project Zomboid
2013
Est. copies
≈ 30.5M–49.6M
67x vs typical
SteamSpy 10M–20M
Est. revenue
$209.9M–$564.4M after Steam's cut $381.6M–$868.2M before Steam's cut
$24.99
483k reviews
Very Positive
SurvivalZombies
The Flame in the Flood
2016
Est. copies
≈ 304k–494k
SteamSpy 500k–1M
Est. revenue
$1.3M–$3.4M after Steam's cut $2.3M–$5.2M before Steam's cut
$14.99
7k reviews
Mostly Positive
SurvivalAdventure
Hello Kitty Island Adventure
2025
Est. copies
≈ 311k–505k
1.7x vs typical
SteamSpy 100k–200k
Est. revenue
$3.4M–$9.2M after Steam's cut $6.2M–$14.1M before Steam's cut
$39.99
13k reviews
Very Positive
CozyOpen World
RPG MO
2015
Est. copies
≈ 145k–236k
SteamSpy 500k–1M
Est. revenue
Free
Free
3k reviews
Mostly Positive
Free to PlayRPG
Dead Maze
2018
Est. copies
≈ 146k–238k
SteamSpy 1M–2M
Est. revenue
Free
Free
5k reviews
Mostly Positive
Free to PlaySurvival
UnderRail
2015
Est. copies
≈ 354k–576k
SteamSpy 200k–500k
Est. revenue
$1.5M–$3.9M after Steam's cut $2.7M–$6.0M before Steam's cut
$14.99
7k reviews
Very Positive
RPGPost-apocalyptic
Feel The Snow
2019
Est. copies
≈ 88k–143k
SteamSpy 100k–200k
Est. revenue
$315k–$847k after Steam's cut $573k–$1.3M before Steam's cut
$12.99
3k reviews
Very Positive
Open World Survival CraftMultiplayer
HumanitZ
2026
Est. copies
≈ 357k–580k
2.0x vs typical
SteamSpy 200k–500k
Est. revenue
$2.0M–$5.3M after Steam's cut $3.6M–$8.1M before Steam's cut
$19.99
14k reviews
Mostly Positive
Early AccessSurvival

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