How many copies did The Defender: Farm and Castle sell?

32k to 51k copies, based on its 1k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did The Defender: Farm and Castle make?

The Defender: Farm and Castle is free to play, so there is no copy-sales revenue to estimate.

How big is The Defender: Farm and Castle?

Estimated owners: ≈ 32k–51k; from 1k 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 The Defender: Farm and Castle out and predicted the genre from its 8 similar games. Every figure here, including The Defender: Farm and Castle's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 439k–1.4M

best case 21.7M (Counter-Strike)

Games like The Defender: Farm and Castle

The middle of these games

≈ 439k–1.4M copies

≈ $2.7M–$7.1M after Steam's cut

from ~14k 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: Counter-Strike at ≈ 16.5M–26.8M copies, ≈ $45.4M–$122.0M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Tower Defense (6 of 8) and Co-op (3 of 8).
The winners: Winners here lead with FPS + Shooter, priced around $10. The breakout hits carry Classic + Team-Based + First-Person; a typical game here doesn't.
The era: The games you compared span 2000 to 2020, 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

Game	Est. copies	Est. revenue	Price	Reviews	Tags
Counter-Strike 2000	Est. copies ≈ 16.5M–26.8M 18x vs typical SteamSpy 10M–20M	Est. revenue $45.4M–$122.0M after Steam's cut $82.5M–$187.7M before the cut	$9.99	261k reviews Overwhelmingly Positive	ActionFPS
Sanctum 2 2013	Est. copies ≈ 909k–1.5M SteamSpy 2M–5M	Est. revenue $3.7M–$10.1M after Steam's cut $6.8M–$15.5M before the cut	$14.99	14k reviews Very Positive	Tower Defense FPS
Orcs Must Die! 2 2012	Est. copies ≈ 1.2M–2.0M SteamSpy 2M–5M	Est. revenue $5.1M–$13.7M after Steam's cut $9.3M–$21.1M before the cut	$14.99	20k reviews Very Positive	Tower Defense Co-op
Orcs Must Die! 2011	Est. copies ≈ 538k–875k SteamSpy 1M–2M	Est. revenue $1.5M–$4.0M after Steam's cut $2.7M–$6.1M before the cut	$9.99	9k reviews Overwhelmingly Positive	Tower DefenseAction
Bloons TD Battles 2016	Est. copies ≈ 1.2M–2.0M 2.0x vs typical SteamSpy 1M–2M	Est. revenue Free	Free	29k reviews Very Positive	Free to PlayTower Defense
Plants vs. Zombies: Battle for Neighborville™ 2020	Est. copies ≈ 466k–758k SteamSpy 1M–2M	Est. revenue $3.8M–$10.3M after Steam's cut $7.0M–$15.9M before the cut	$29.99	19k reviews Mostly Positive	MultiplayerThird-Person Shooter
X-Morph: Defense 2017	Est. copies ≈ 143k–233k SteamSpy 200k–500k	Est. revenue $788k–$2.1M after Steam's cut $1.4M–$3.3M before the cut	$19.99	4k reviews Very Positive	Tower DefenseStrategy
GUNS UP! 2018	Est. copies ≈ 203k–330k SteamSpy 500k–1M	Est. revenue Free	Free	7k reviews Mostly Positive	Free to PlayStrategy