How many copies did The RPG Engine sell?

8k to 12k copies, based on its 303 Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did The RPG Engine make?

The RPG Engine is free to play, so there is no copy-sales revenue to estimate.

How big is The RPG Engine?

Estimated players who have it: ≈ 8k–12k; from 303 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 The RPG Engine and predicted how it would do from its 8 similar games. Every figure here, including The RPG Engine's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 611k–1.3M

best case 1.6M (Warhammer 40,000: Rogue Trader)

Games like The RPG Engine

A typical game among these

≈ 611k–1.3M copies

≈ $4.6M–$11.2M after Steam's cut

from ~20k reviews

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

7 of the 8 similar games are hits.

No genre covers most of these similar games. The closest is Simulation (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: Warhammer 40,000: Rogue Trader at ≈ 1.2M–2.0M copies, ≈ $16.5M–$44.4M after Steam's cut.

What their first month looked like

About half the games that made it here had over 9k reviews in their first month; the range was 3 to 17k.

The genre you'd be entering

These games: The similar games share Simulation (4 of 8) and Card Game (3 of 8).
The winners: Winners here lead with Character Customization + Cinematic, priced around $50.
When they shipped: The similar games span 2015 to 2025, and 2 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 61 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
Pool 2D - Poolians 2019	Est. copies ≈ 297k–483k SteamSpy 500k–1M	Est. revenue Free	Free	10k reviews Very Positive	Free to PlayPool
The Test 2020	Est. copies ≈ 499k–810k SteamSpy 500k–1M	Est. revenue $273k–$734k after Steam's cut $496k–$1.1M before Steam's cut	$1.99	20k reviews Overwhelmingly Positive	Choose Your Own AdventureSimulation
Pathfinder: Wrath of the Righteous - Enhanced Edition 2021	Est. copies ≈ 1.1M–1.8M 2.2x vs typical SteamSpy 2M–5M	Est. revenue $6.1M–$16.3M after Steam's cut $11.0M–$25.1M before Steam's cut	$19.99	44k reviews Very Positive	SingleplayerAction RPG
Sultan's Game 2025	Est. copies ≈ 876k–1.4M 1.8x vs typical SteamSpy 1M–2M	Est. revenue $6.0M–$16.2M after Steam's cut $10.9M–$24.9M before Steam's cut	$24.99	35k reviews Very Positive	RPGSimulation
Cultist Simulator 2018	Est. copies ≈ 433k–704k SteamSpy 500k–1M	Est. revenue $2.4M–$6.4M after Steam's cut $4.3M–$9.8M before Steam's cut	$19.99	14k reviews Mostly Positive	SimulationChoices Matter
Warhammer 40,000: Rogue Trader 2023	Est. copies ≈ 1.2M–2.0M 2.4x vs typical SteamSpy 10M–20M	Est. revenue $16.5M–$44.4M after Steam's cut $30.0M–$68.3M before Steam's cut	$49.99	48k reviews Very Positive	Character CustomizationCinematic
Hand of Fate 2015	Est. copies ≈ 522k–848k SteamSpy 500k–1M	Est. revenue $2.9M–$7.7M after Steam's cut $5.2M–$11.9M before Steam's cut	$19.99	11k reviews Very Positive	Roguelike Deckbuilder Rogue-like
Mr. Goofer’s Mini Game Arcade Party! 2025	Est. copies ≈ 149–242 too small to compare SteamSpy under 20k	Est. revenue $205–$549 after Steam's cut $372–$845 before Steam's cut	$4.99	6 reviews 6 user reviews	ArcadeCartoony