How many copies did RPG MO sell?

145k to 236k copies, based on its 3k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did RPG MO make?

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

How big is RPG MO?

Estimated players who have it: ≈ 145k–236k; from 3k reviews (Mostly 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 RPG MO and predicted how it would do from its 8 similar games. Every figure here, including RPG MO's, is estimated from Steam reviews.

Copies, estimated from reviews

typical (middle half) 4.5M–7.9M

best case 25.0M (Destiny 2)

Games like RPG MO

A typical game among these

≈ 4.5M–7.9M copies

≈ $48.7M–$61.3M after Steam's cut

from ~119k 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: Destiny 2 at ≈ 19.1M–31.0M copies.

The genre you'd be entering

These games: The similar games share Open World (8 of 8) and MMORPG (6 of 8).
The winners: Winners here lead with Open World + Looter Shooter.
When they shipped: The similar games span 2014 to 2021, and none of them 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 70 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
New World: Aeternum 2021	Est. copies ≈ 7.4M–12.0M 2.5x vs typical SteamSpy 50M–100M	Est. revenue Free	Free	297k reviews Mixed	Open WorldMassively Multiplayer
Albion Online 2018	Est. copies ≈ 2.9M–4.6M SteamSpy 2M–5M	Est. revenue Free	Free	94k reviews Mostly Positive	Free to PlayMMORPG
Destiny 2 2019	Est. copies ≈ 19.1M–31.0M 5.6x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	663k reviews Mostly Positive	Free to PlayOpen World
FINAL FANTASY XIV Online 2014	Est. copies ≈ 4.8M–7.8M SteamSpy 2M–5M	Est. revenue $26.4M–$71.0M after Steam's cut $48.0M–$109.3M before Steam's cut	$19.99	86k reviews Very Positive	MMORPGRPG
Tom Clancy’s The Division™ 2016	Est. copies ≈ 4.0M–6.6M SteamSpy 5M–10M	Est. revenue $33.2M–$89.4M after Steam's cut $60.5M–$137.5M before Steam's cut	$29.99	97k reviews Mostly Positive	Open WorldLooter Shooter
Black Desert 2017	Est. copies ≈ 3.2M–5.3M SteamSpy 5M–10M	Est. revenue $8.9M–$24.0M after Steam's cut $16.2M–$36.9M before Steam's cut	$9.99	94k reviews Mostly Positive	MMORPGMassively Multiplayer
The Elder Scrolls® Online 2017	Est. copies ≈ 5.6M–9.0M SteamSpy 5M–10M	Est. revenue $30.6M–$82.2M after Steam's cut $55.6M–$126.5M before Steam's cut	$19.99	162k reviews Very Positive	RPGMMORPG
Fallout 76 2020	Est. copies ≈ 3.5M–5.7M SteamSpy 2M–5M	Est. revenue $38.4M–$103.3M after Steam's cut $69.8M–$158.9M before Steam's cut	$39.99	141k reviews Mostly Positive	Open WorldMultiplayer