How much revenue did Fort Defense make?

$85k–$229k after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Fort Defense sell?

Q: How many copies did Fort Defense sell?

21k to 34k copies, based on its 424 Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 21k–34k; $85k–$229k after Steam's cut $155k–$353k before Steam's cut; from 424 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 Fort Defense and predicted how it would do from its 8 similar games. Every figure here, including Fort Defense's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 82–3k

best case 15.8M (Bloons TD 6)

Games like Fort Defense

A typical game among these

≈ 82–3k copies

≈ $690–$2k after Steam's cut

from ~13 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: Bloons TD 6 at ≈ 12.0M–19.6M copies, ≈ $46.3M–$124.5M after Steam's cut. It is a breakout hit, far above a typical game.

What their first month looked like

The games that made it here had under 11 reviews in their first month.

Games with under about 100 reviews in month one almost never recover.

The genre you'd be entering

These games: The similar games share Tower Defense (7 of 8) and Arcade (2 of 8).
The winners: Winners here lead with Tower Defense + Co-op, priced around $14. The breakout hits carry Multiplayer + Online Co-Op + Co-op; a typical game here doesn't.
When they shipped: The similar games span 2011 to 2024, and 1 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

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Bloons TD 6 2018	Est. copies ≈ 12.0M–19.6M 30447x vs typical SteamSpy 2M–5M	Est. revenue $46.3M–$124.5M after Steam's cut $84.2M–$191.5M before Steam's cut	$13.99	396k reviews Overwhelmingly Positive	Tower DefenseStrategy
Zombie Pirates 2011	Est. copies ≈ 4k–6k 4.8x vs typical SteamSpy under 20k	Est. revenue $11k–$29k after Steam's cut $20k–$45k before Steam's cut	$9.99	63 reviews Mixed	CasualPirates
Seacurity Breach 2019	Est. copies ≈ 374–608 SteamSpy under 20k	Est. revenue $1k–$3k after Steam's cut $2k–$4k before Steam's cut	$9.99	13 reviews Mixed	StrategyIndie
Pirates of Everseas 2019	Est. copies ≈ 4k–6k 10x vs typical SteamSpy 50k–100k	Est. revenue Free	Free	133 reviews Mixed	Free to PlayStrategy
Magic Archers 2020	Est. copies ≈ 50–81 SteamSpy under 20k	Est. revenue Free	Free	2 reviews 2 user reviews	SingleplayerCasual
Build Em' Faster 2021	Est. copies ≈ 74–121 SteamSpy under 20k	Est. revenue $41–$110 after Steam's cut $74–$169 before Steam's cut	$1.99	3 reviews 3 user reviews	ActionCasual
Chest Mate 2022	Est. copies ≈ 322–524 SteamSpy under 20k	Est. revenue $442–$1k after Steam's cut $803–$2k before Steam's cut	$4.99	13 reviews Positive	Tower Defense Puzzle
Capers vs Pirates 2024	Est. copies ≈ 25–40 SteamSpy under 20k	Est. revenue $378–$1k after Steam's cut $687–$2k before Steam's cut	$54.99	1 reviews 1 user reviews	Tower DefenseRTS