How many copies did Kingdom: Classic sell?

An estimated 1.1M to 1.7M copies, based on its 23k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Kingdom: Classic make?

Kingdom: Classic is free to play, so there is no copy-sales revenue to estimate.

How big is Kingdom: Classic?

Estimated owners: ≈ 1.1M–1.7M; from 23k 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 Kingdom: Classic out and predicted the genre from its 8 similar games. Every figure here, including Kingdom: Classic's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 11.5M–25.1M

best case 52.2M (War Thunder)

The Multiplayer lane

A big, proven genre: most sell around 16.6M copies.

A typical game

≈ 16.6M copies

≈ $111.0M after Steam's cut

from ~373k reviews

Best case

≈ 52.2M copies

War Thunder

from 765k reviews

Copies and revenue are rough lifetime estimates from the review count; typical figures are medians per column, so they can come from different games.

The lane you'd be entering

Winners here lead with Free to Play + Simulation, priced around $25.
The games you compared span 2013 to 2022, a lane with a long track record.
A typical game here lands in Diamond ($1M+ before Steam's cut, est.). Tiers: Chris Zukowski's benchmark tiers.

Similar games

Game	Price	Reviews	Tags	Est. copies	Est. revenue
Bloons TD 6 2018	Est. copies ≈ 11.9M–19.3M SteamSpy 2M–5M	Est. revenue $45.6M–$122.7M net $83.0M–$188.7M gross	$13.99	390k reviews Overwhelmingly Positive	Tower DefenseStrategy +6
Hearts of Iron IV 2016	Est. copies ≈ 14.8M–24.1M SteamSpy 5M–10M	Est. revenue $204.0M–$548.6M net $371.0M–$844.0M gross	$49.99	371k reviews Very Positive	StrategyWorld War II +6
War Thunder 2013	Est. copies ≈ 39.8M–64.6M 2.1x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	765k reviews Mostly Positive	Free to PlaySimulation +6
SCP: Secret Laboratory 2017	Est. copies ≈ 8.0M–13.0M SteamSpy 5M–10M	Est. revenue Free	Free	232k reviews Very Positive	Free to PlayMultiplayer +6
Raft 2022	Est. copies ≈ 9.0M–14.6M SteamSpy 10M–20M	Est. revenue $49.4M–$132.9M net $89.9M–$204.5M gross	$19.99	375k reviews Very Positive	SurvivalMultiplayer +6
RimWorld 2018	Est. copies ≈ 7.4M–12.0M SteamSpy 5M–10M	Est. revenue $70.9M–$190.6M net $128.9M–$293.2M gross	$34.99	242k reviews Overwhelmingly Positive	Colony SimBase-Building +6
Geometry Dash 2014	Est. copies ≈ 32.1M–52.1M 1.7x vs typical SteamSpy 5M–10M	Est. revenue $44.0M–$118.3M net $80.0M–$182.0M gross	$4.99	617k reviews Very Positive	DifficultMusic +6
Cities: Skylines 2015	Est. copies ≈ 13.5M–21.9M SteamSpy 10M–20M	Est. revenue $111.0M–$298.5M net $201.9M–$459.3M gross	$29.99	290k reviews Very Positive	City BuilderSimulation +6