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How many copies did Deep Among the Swarm sell?

Estimated copies sold
≈ 3k–6k
$9k–$23k after Steam's cut $16k–$36k before the cut
from 141 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 Deep Among the Swarm out and predicted the genre from its 8 similar games. Every figure here, including Deep Among the Swarm's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.1M–1.4M
best case 1.9M (They Are Billions)
Games like Deep Among the Swarm

The middle of these games

≈ 1.1M–1.4M copies

≈ $6.6M–$9.8M after Steam's cut

from ~25k 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.

Best case: They Are Billions at ≈ 1.5M–2.4M copies, ≈ $12.2M–$32.8M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering
Your set
Your set clusters on Base-Building (5 of 8) and Building (5 of 8).
The winners
Winners here lead with Base-Building + Colony Sim, priced around $30. The breakout hits carry Zombies + Survival + RTS; a typical game here doesn't.
The era
The games you compared span 2013 to 2022, and none of them 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

Stronghold Crusader HD (2012)
2013
Est. copies
≈ 1.3M–2.2M
SteamSpy 1M–2M
Est. revenue
$3.7M–$9.8M after Steam's cut $6.6M–$15.1M before the cut
$9.99
21k reviews
Overwhelmingly Positive
MilitaryCity Builder
Mindustry
2019
Est. copies
≈ 803k–1.3M
SteamSpy 1M–2M
Est. revenue
$2.2M–$5.9M after Steam's cut $4.0M–$9.1M before the cut
$9.99
28k reviews
Overwhelmingly Positive
Base-BuildingResource Management
Forts
2017
Est. copies
≈ 870k–1.4M
SteamSpy 1M–2M
Est. revenue
$3.6M–$9.6M after Steam's cut $6.5M–$14.8M before the cut
$14.99
25k reviews
Very Positive
Base-BuildingMultiplayer
Stronghold HD (2012)
2013
Est. copies
≈ 659k–1.1M
too small to compare
SteamSpy 200k–500k
Est. revenue
$1.1M–$2.9M after Steam's cut $2.0M–$4.5M before the cut
$5.99
10k reviews
Overwhelmingly Positive
Real Time TacticsCity Builder
Starship Troopers: Terran Command
2022
Est. copies
≈ 298k–484k
too small to compare
SteamSpy 200k–500k
Est. revenue
$2.5M–$6.6M after Steam's cut $4.5M–$10.2M before the cut
$29.99
12k reviews
Very Positive
StrategyRTS
They Are Billions
2019
Est. copies
≈ 1.5M–2.4M
2.0x vs typical
SteamSpy 2M–5M
Est. revenue
$12.2M–$32.8M after Steam's cut $22.2M–$50.5M before the cut
$29.99
51k reviews
Very Positive
Base-BuildingColony Sim
Kingdoms and Castles
2017
Est. copies
≈ 1.1M–1.8M
SteamSpy 1M–2M
Est. revenue
$5.9M–$16.0M after Steam's cut $10.8M–$24.6M before the cut
$19.99
31k reviews
Very Positive
Dungeons 3
2017
Est. copies
≈ 644k–1.0M
SteamSpy 1M–2M
Est. revenue
$5.3M–$14.3M after Steam's cut $9.7M–$22.0M before the cut
$29.99
19k reviews
Very Positive
StrategyVillain Protagonist

Sizing up your own game? See what its genre can realistically do before you build it.