How many copies did Project Morpheus: Prologue sell?

13k to 22k copies, based on its 541 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Project Morpheus: Prologue make?

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

How big is Project Morpheus: Prologue?

Estimated players who have it: ≈ 13k–22k; from 541 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 Project Morpheus: Prologue and predicted how it would do from its 8 similar games. Every figure here, including Project Morpheus: Prologue's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 21.5M–43.2M

best case 125.7M (PUBG: BATTLEGROUNDS)

Games like Project Morpheus: Prologue

A typical game among these

≈ 21.5M–43.2M copies

≈ $120.7M–$213.3M after Steam's cut

from ~544k 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.

No genre covers most of these similar games. The closest is Survival (4 of 8), so its genre is hard to place.

Of the 416 indie games that passed 1,000 reviews in 2022, 11.8% were novel genre mixes and 88.2% stuck to an established genre. Published indie market research.

Best case: PUBG: BATTLEGROUNDS at ≈ 95.8M–155.7M copies. It is a breakout hit, far above a typical game.

The genre you'd be entering

These games: The similar games share Survival (4 of 8) and Co-op (3 of 8).
The winners: Winners here lead with Survival + Shooter. The breakout hits carry Shooter + Battle Royale + PvP; a typical game here doesn't.
When they shipped: The similar games span 2011 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
Bloons TD 6 2018	Est. copies ≈ 12.0M–19.6M SteamSpy 2M–5M	Est. revenue $46.3M–$124.5M after Steam's cut $84.2M–$191.5M before Steam's cut	$13.99	396k reviews Overwhelmingly Positive	Tower DefenseStrategy
Geometry Dash 2014	Est. copies ≈ 36.2M–58.9M SteamSpy 5M–10M	Est. revenue $49.7M–$133.7M after Steam's cut $90.4M–$205.7M before Steam's cut	$4.99	647k reviews Very Positive	DifficultMusic
Portal 2 2011	Est. copies ≈ 29.5M–48.0M SteamSpy 5M–10M	Est. revenue $81.1M–$218.1M after Steam's cut $147.5M–$335.6M before Steam's cut	$9.99	467k reviews Overwhelmingly Positive	Platformer Puzzle
PUBG: BATTLEGROUNDS 2017	Est. copies ≈ 95.8M–155.7M 5.1x vs typical SteamSpy 100M–200M	Est. revenue Free	Free	2.8M reviews Mixed	SurvivalShooter
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
PAYDAY 2 2013	Est. copies ≈ 42.7M–69.3M SteamSpy 20M–50M	Est. revenue $117.2M–$315.1M after Steam's cut $213.1M–$484.7M before Steam's cut	$9.99	675k reviews Very Positive	Co-opAction
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
7 Days to Die 2024	Est. copies ≈ 9.9M–16.2M SteamSpy 10M–20M	Est. revenue $123.1M–$331.0M after Steam's cut $223.8M–$509.2M before Steam's cut	$44.99	401k reviews Very Positive	SurvivalZombies