How many copies did Crusader Kings II sell?

4.7M to 7.6M copies, based on its 74k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Crusader Kings II make?

Crusader Kings II is free to play, so there is no copy-sales revenue to estimate.

How big is Crusader Kings II?

Estimated owners: ≈ 4.7M–7.6M; from 74k 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 Crusader Kings II out and predicted the genre from its 8 similar games. Every figure here, including Crusader Kings II's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 1.8M–3.4M

best case 4.7M (Crusader Kings III)

Games like Crusader Kings II

The middle of these games

≈ 1.8M–3.4M copies

≈ $19.1M–$55.3M after Steam's cut

from ~53k 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: Crusader Kings III at ≈ 3.5M–5.8M copies, ≈ $48.8M–$131.2M after Steam's cut.

What it took to get here

About half the games that made it here had over 22k reviews in their first month; the spread ran 2k to 44k.

The genre you'd be entering

Your set: Your set clusters on Grand Strategy (8 of 8) and Historical (8 of 8).
The winners: Winners here lead with Medieval + Grand Strategy, priced around $50.
The era: The games you compared span 2006 to 2024, and 1 of your 7 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
Total War: SHOGUN 2 unreleased	Est. copies ≈ 1.7M–2.7M SteamSpy 2M–5M	Est. revenue Free	Free	68k reviews Very Positive	StrategyHistorical
Manor Lords 2024	Est. copies ≈ 2.3M–3.7M 1.7x vs typical SteamSpy 2M–5M	Est. revenue $24.8M–$66.6M after Steam's cut $45.0M–$102.4M before the cut	$39.99	91k reviews Very Positive	StrategyCity Builder
Total War: SHOGUN 2 2011	Est. copies ≈ 4.3M–6.9M SteamSpy 2M–5M	Est. revenue $35.2M–$94.8M after Steam's cut $64.1M–$145.8M before the cut	$29.99	68k reviews Very Positive	StrategyHistorical
Total War: ATTILA 2015	Est. copies ≈ 1.8M–3.0M SteamSpy 2M–5M	Est. revenue $22.7M–$61.1M after Steam's cut $41.3M–$94.0M before the cut	$44.99	38k reviews Very Positive	StrategyHistorical
Knights of Honor II: Sovereign 2022	Est. copies ≈ 166k–270k SteamSpy 100k–200k	Est. revenue $2.1M–$5.5M after Steam's cut $3.7M–$8.5M before the cut	$44.99	7k reviews Mostly Positive	StrategySimulation
A Total War Saga: THRONES OF BRITANNIA 2018	Est. copies ≈ 452k–735k SteamSpy 500k–1M	Est. revenue $5.0M–$13.4M after Steam's cut $9.0M–$20.6M before the cut	$39.99	15k reviews Mostly Positive	StrategyHistorical
Crusader Kings III 2020	Est. copies ≈ 3.5M–5.8M 2.7x vs typical SteamSpy 2M–5M	Est. revenue $48.8M–$131.2M after Steam's cut $88.7M–$201.9M before the cut	$49.99	143k reviews Very Positive	StrategyMedieval
Total War: MEDIEVAL II – Definitive Edition 2006	Est. copies ≈ 2.3M–3.7M SteamSpy 1M–2M	Est. revenue $15.8M–$42.5M after Steam's cut $28.7M–$65.3M before the cut	$24.99	36k reviews Overwhelmingly Positive	StrategyMedieval