How many copies did DDNet sell?

1.2M to 2.0M copies, based on its 46k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did DDNet make?

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

How big is DDNet?

Estimated owners: ≈ 1.2M–2.0M; from 46k 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 DDNet out and predicted the genre from its 8 similar games. Every figure here, including DDNet's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 27.2M–49.1M

best case 123.4M (PUBG: BATTLEGROUNDS)

The FPS genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 27.2M–49.1M copies

≈ $56.9M after Steam's cut

from ~671k reviews

Best case

≈ 94.0M–152.8M copies

PUBG: BATTLEGROUNDS

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on FPS (3 of 8) and Battle Royale (2 of 8).
The winners: Winners here lead with Survival + Shooter, priced around $5. The breakout hits carry PvP + Survival + Shooter; a typical game here doesn't.
The era: The games you compared span 2007 to 2020, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

Game	Est. copies	Est. revenue	Price	Reviews	Tags
War Thunder 2013	Est. copies ≈ 40.0M–64.9M SteamSpy 20M–50M	Est. revenue Free	Free	768k reviews Mostly Positive	Free to PlaySimulation
Warframe 2013	Est. copies ≈ 34.9M–56.7M SteamSpy 20M–50M	Est. revenue Free	Free	671k reviews Very Positive	Free to PlayAction RPG
Fall Guys 2020	Est. copies ≈ 12.4M–20.1M SteamSpy 20M–50M	Est. revenue Free	Free	469k reviews Very Positive	MultiplayerParty Game
Destiny 2 2019	Est. copies ≈ 19.0M–30.9M SteamSpy 20M–50M	Est. revenue Free	Free	660k reviews Mostly Positive	Free to PlayOpen World
PUBG: BATTLEGROUNDS 2017	Est. copies ≈ 94.0M–152.8M 4.1x vs typical SteamSpy 100M–200M	Est. revenue Free	Free	2.7M reviews Mixed	SurvivalShooter
Team Fortress 2 2007	Est. copies ≈ 64.6M–105.0M 1.9x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	1.2M reviews Very Positive	Free to PlayHero Shooter
Rocket League® 2015	Est. copies ≈ 26.9M–43.7M SteamSpy 10M–20M	Est. revenue Free	Free	580k reviews Very Positive	MultiplayerFootball (Soccer)
Among Us 2018	Est. copies ≈ 22.5M–36.5M SteamSpy 20M–50M	Est. revenue $30.8M–$82.9M after Steam's cut $56.1M–$127.5M before the cut	$4.99	739k reviews Very Positive	MultiplayerSocial Deduction