How many copies did Battle Islands sell?

194k to 316k copies, based on its 3k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Battle Islands make?

Battle Islands is free to play, so there is no copy-sales revenue to estimate.

How big is Battle Islands?

Estimated owners: ≈ 194k–316k; from 3k reviews (Mostly 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 Battle Islands out and predicted the genre from its 8 similar games. Every figure here, including Battle Islands's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 19k–61k

best case 124k (Toy Soldiers)

Games like Battle Islands

The middle of these games

≈ 19k–61k copies

≈ $53k–$375k after Steam's cut

from ~561 reviews

Only the top fifth of 2019’s Steam releases earned about $34k gross, so plan for that or less.

2 of your 8 similar games are hits.

Best case: Toy Soldiers at ≈ 94k–154k copies, ≈ $260k–$698k after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on Tower Defense (7 of 8) and World War II (5 of 8).
The winners: Winners here lead with Tower Defense + Simulation, priced around $10.
The era: The games you compared span 2012 to 2023, 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
iBomber Defense Pacific 2012	Est. copies ≈ 37k–61k SteamSpy 100k–200k	Est. revenue $62k–$166k after Steam's cut $112k–$255k before the cut	$5.99	592 reviews Very Positive	Tower DefenseStrategy
Warfront Defenders 2017	Est. copies ≈ 2k–3k too small to compare SteamSpy 200k–500k	Est. revenue $3k–$7k after Steam's cut $5k–$10k before the cut	$4.99	53 reviews Mixed	RTSTower Defense
War of Beach 2015	Est. copies ≈ 26k–42k SteamSpy under 20k	Est. revenue Free	Free	529 reviews Mixed	StrategyFree to Play
Skirmish Line 2019	Est. copies ≈ 11k–17k SteamSpy under 20k	Est. revenue $29k–$78k after Steam's cut $53k–$119k before the cut	$9.99	365 reviews Very Positive	World War IIStrategy
Beach Invasion 1945 - Pacific 2023	Est. copies ≈ 7k–11k SteamSpy under 20k	Est. revenue $18k–$50k after Steam's cut $34k–$76k before the cut	$9.99	271 reviews Mostly Positive	ShooterWorld War II
Toy Soldiers: Complete 2016	Est. copies ≈ 49k–80k 2.1x vs typical SteamSpy 200k–500k	Est. revenue $203k–$547k after Steam's cut $370k–$841k before the cut	$14.99	1k reviews Mostly Positive	Tower DefenseAction
Toy Soldiers 2012	Est. copies ≈ 94k–154k 2.7x vs typical SteamSpy 200k–500k	Est. revenue $260k–$698k after Steam's cut $472k–$1.1M before the cut	$9.99	1k reviews Very Positive	StrategyAction
For The Fatherland 2023	Est. copies ≈ 868–1k too small to compare SteamSpy under 20k	Est. revenue $1k–$3k after Steam's cut $2k–$5k before the cut	$4.99	35 reviews Mostly Positive	Tower DefenseStrategy