How many copies did RPG MO sell?

145k to 235k 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 owners: ≈ 145k–235k; from 3k reviews (Mostly 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 RPG MO out and predicted the genre from its 8 similar games. Every figure here, including RPG MO's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 4.5M–7.9M

best case 25.0M (Destiny 2)

Games like RPG MO

The middle of these games

≈ 4.5M–7.9M copies

≈ $48.5M–$61.2M after Steam's cut

from ~119k 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: Destiny 2 at ≈ 19.0M–30.9M copies.

The genre you'd be entering

Your set: Your set clusters on Open World (8 of 8) and MMORPG (6 of 8).
The winners: Winners here lead with Open World + Looter Shooter.
The era: The games you compared 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 ≈ 2.8M–4.6M SteamSpy 2M–5M	Est. revenue Free	Free	93k reviews Mostly Positive	Free to PlayMMORPG
Destiny 2 2019	Est. copies ≈ 19.0M–30.9M 5.6x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	661k reviews Mostly Positive	Free to PlayOpen World
FINAL FANTASY XIV Online 2014	Est. copies ≈ 4.8M–7.8M SteamSpy 2M–5M	Est. revenue $26.3M–$70.8M after Steam's cut $47.9M–$108.9M before the cut	$19.99	85k reviews Very Positive	MMORPGRPG
Tom Clancy’s The Division™ 2016	Est. copies ≈ 4.0M–6.5M SteamSpy 5M–10M	Est. revenue $33.2M–$89.2M after Steam's cut $60.3M–$137.2M before the 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–$23.9M after Steam's cut $16.2M–$36.8M before the 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 $30.5M–$82.1M after Steam's cut $55.5M–$126.2M before the cut	$19.99	161k reviews Very Positive	RPGMMORPG
Fallout 76 2020	Est. copies ≈ 3.5M–5.7M SteamSpy 2M–5M	Est. revenue $38.3M–$102.9M after Steam's cut $69.6M–$158.3M before the cut	$39.99	140k reviews Mostly Positive	Open WorldMultiplayer