How many copies did Mr. Prepper: Prologue sell?

63k to 103k copies, based on its 3k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Mr. Prepper: Prologue make?

Mr. Prepper: Prologue is free to play, so there is no copy-sales revenue to estimate.

How big is Mr. Prepper: Prologue?

Estimated owners: ≈ 63k–103k; from 3k 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 Mr. Prepper: Prologue out and predicted the genre from its 8 similar games. Every figure here, including Mr. Prepper: Prologue's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 12.3M–29.6M

best case 55.6M (Rust)

Games like Mr. Prepper: Prologue

The middle of these games

≈ 12.3M–29.6M copies

≈ $119.9M–$209.9M after Steam's cut

from ~477k 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: Rust at ≈ 42.4M–68.9M copies, ≈ $466.2M–$1253.5M after Steam's cut. A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Survival (8 of 8) and Open World (7 of 8).
The winners: Winners here lead with Survival + Crafting, priced around $40. The breakout hits carry PvP + Sandbox + Building; a typical game here doesn't.
The era: The games you compared span 2013 to 2024, 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 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
Rust 2018	Est. copies ≈ 42.4M–68.9M 2.9x vs typical SteamSpy 20M–50M	Est. revenue $466.2M–$1253.5M after Steam's cut $847.6M–$1928.4M before the cut	$39.99	1.4M reviews Very Positive	SurvivalCrafting
The Forest 2018	Est. copies ≈ 20.7M–33.6M SteamSpy 20M–50M	Est. revenue $113.8M–$305.9M after Steam's cut $206.9M–$470.7M before the cut	$19.99	681k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Project Zomboid 2013	Est. copies ≈ 30.2M–49.0M SteamSpy 10M–20M	Est. revenue $207.3M–$557.3M after Steam's cut $376.9M–$857.4M before the cut	$24.99	477k reviews Very Positive	SurvivalZombies
Don't Starve Together 2016	Est. copies ≈ 22.6M–36.7M SteamSpy 10M–20M	Est. revenue $93.0M–$250.0M after Steam's cut $169.0M–$384.6M before the cut	$14.99	542k reviews Very Positive	SurvivalOpen World Survival Craft
Sons Of The Forest 2024	Est. copies ≈ 7.9M–12.8M SteamSpy 10M–20M	Est. revenue $65.0M–$174.9M after Steam's cut $118.2M–$269.0M before the cut	$29.99	318k reviews Very Positive	SurvivalOpen World
Raft 2022	Est. copies ≈ 9.4M–15.2M SteamSpy 10M–20M	Est. revenue $51.5M–$138.4M after Steam's cut $93.6M–$213.0M before the cut	$19.99	378k reviews Very Positive	SurvivalMultiplayer
Space Engineers 2019	Est. copies ≈ 3.9M–6.3M too small to compare SteamSpy 2M–5M	Est. revenue $21.3M–$57.2M after Steam's cut $38.7M–$88.0M before the cut	$19.99	134k reviews Very Positive	SpaceSandbox
Don't Starve 2013	Est. copies ≈ 7.2M–11.6M too small to compare SteamSpy 2M–5M	Est. revenue $19.7M–$52.9M after Steam's cut $35.8M–$81.4M before the cut	$9.99	113k reviews Overwhelmingly Positive	SurvivalOpen World Survival Craft