How many copies did Infestation: The New Z sell?

1.4M to 2.3M copies, based on its 34k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Infestation: The New Z make?

Infestation: The New Z is free to play, so there is no copy-sales revenue to estimate.

How big is Infestation: The New Z?

Estimated owners: ≈ 1.4M–2.3M; from 34k reviews (Mixed)

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 Infestation: The New Z out and predicted the genre from its 8 similar games. Every figure here, including Infestation: The New Z's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 6.3M–14.2M

best case 40.4M (Wallpaper Engine)

Games like Infestation: The New Z

The middle of these games

≈ 6.3M–14.2M copies

≈ $76.3M–$101.9M after Steam's cut

from ~202k 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: Wallpaper Engine at ≈ 30.8M–50.0M copies, ≈ $42.2M–$113.5M after Steam's cut.

The genre you'd be entering

Your set: Your set clusters on FPS (5 of 8) and Open World (5 of 8).
The winners: Winners here lead with Mature + Utilities, priced around $5.
The era: The games you compared span 2016 to 2025, and 1 of your 8 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 52 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
Unturned 2017	Est. copies ≈ 19.4M–31.6M 2.8x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	565k reviews Very Positive	Free to PlaySurvival
Wallpaper Engine 2018	Est. copies ≈ 30.8M–50.0M 5.0x vs typical SteamSpy 20M–50M	Est. revenue $42.2M–$113.5M after Steam's cut $76.8M–$174.6M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
theHunter: Call of the Wild™ 2017	Est. copies ≈ 7.0M–11.3M SteamSpy 5M–10M	Est. revenue Free	Free	202k reviews Very Positive	HuntingOpen World
Deceit 2017	Est. copies ≈ 3.2M–5.2M SteamSpy 5M–10M	Est. revenue Free	Free	92k reviews Mostly Positive	PvPMultiplayer
SCUM 2025	Est. copies ≈ 3.1M–5.1M SteamSpy 5M–10M	Est. revenue $38.8M–$104.2M after Steam's cut $70.5M–$160.3M before the cut	$44.99	126k reviews Mostly Positive	SurvivalOpen World Survival Craft
Killing Floor 2 2016	Est. copies ≈ 5.4M–8.7M SteamSpy 2M–5M	Est. revenue $44.4M–$119.3M after Steam's cut $80.6M–$183.5M before the cut	$29.99	129k reviews Very Positive	ZombiesMultiplayer
Z1 Battle Royale 2018	Est. copies ≈ 6.2M–10.0M SteamSpy 10M–20M	Est. revenue Free	Free	202k reviews Mixed	SurvivalMassively Multiplayer
Hunt: Showdown 1896 2019	Est. copies ≈ 8.0M–13.0M SteamSpy 10M–20M	Est. revenue $87.8M–$236.2M after Steam's cut $159.7M–$363.4M before the cut	$39.99	277k reviews Mostly Positive	Open WorldExtraction Shooter