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 players who have it: ≈ 63k–103k; from 3k reviews (Very Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

Did the prediction match what actually happened?

We hid Mr. Prepper: Prologue and predicted how it would do from its 8 similar games. Every figure here, including Mr. Prepper: Prologue's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 12.3M–29.7M

best case 56.0M (Rust)

Games like Mr. Prepper: Prologue

A typical game among these

≈ 12.3M–29.7M copies

≈ $121.2M–$210.5M after Steam's cut

from ~483k reviews

Only the top fifth of 2019's Steam releases earned $34k or more before Steam's cut, so plan for that or less.

All 8 of the similar games are hits.

Best case: Rust at ≈ 42.7M–69.3M copies, ≈ $469.3M–$1261.8M after Steam's cut. It is a breakout hit, far above a typical game.

The genre you'd be entering

These games: The similar games share 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.
When they shipped: The similar games span 2013 to 2024, and 1 of the 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 ≈ 42.7M–69.3M 2.9x vs typical SteamSpy 20M–50M	Est. revenue $469.3M–$1261.8M after Steam's cut $853.3M–$1941.3M before Steam's cut	$39.99	1.4M reviews Very Positive	SurvivalCrafting
The Forest 2018	Est. copies ≈ 20.8M–33.7M SteamSpy 20M–50M	Est. revenue $114.2M–$306.9M after Steam's cut $207.5M–$472.2M before Steam's cut	$19.99	683k reviews Overwhelmingly Positive	Open World Survival CraftSurvival
Project Zomboid 2013	Est. copies ≈ 30.5M–49.6M SteamSpy 10M–20M	Est. revenue $209.9M–$564.4M after Steam's cut $381.6M–$868.2M before Steam's cut	$24.99	483k reviews Very Positive	SurvivalZombies
Don't Starve Together 2016	Est. copies ≈ 22.6M–36.8M SteamSpy 10M–20M	Est. revenue $93.2M–$250.7M after Steam's cut $169.5M–$385.7M before Steam's cut	$14.99	544k reviews Very Positive	SurvivalOpen World Survival Craft
Sons Of The Forest 2024	Est. copies ≈ 8.0M–12.9M SteamSpy 10M–20M	Est. revenue $65.7M–$176.6M after Steam's cut $119.4M–$271.7M before Steam's cut	$29.99	321k reviews Very Positive	SurvivalOpen World
Raft 2022	Est. copies ≈ 9.4M–15.3M SteamSpy 10M–20M	Est. revenue $51.7M–$139.0M after Steam's cut $94.0M–$213.8M before Steam's cut	$19.99	379k reviews Very Positive	SurvivalMultiplayer
Space Engineers 2019	Est. copies ≈ 3.9M–6.3M too small to compare SteamSpy 2M–5M	Est. revenue $21.3M–$57.3M after Steam's cut $38.7M–$88.1M before Steam's cut	$19.99	135k reviews Very Positive	SpaceSandbox
Don't Starve 2013	Est. copies ≈ 7.2M–11.7M too small to compare SteamSpy 2M–5M	Est. revenue $19.7M–$53.0M after Steam's cut $35.8M–$81.5M before Steam's cut	$9.99	114k reviews Overwhelmingly Positive	SurvivalOpen World Survival Craft