How many copies did Riichi City - Japanese Mahjong sell?

113k to 184k copies, based on its 5k Steam reviews. This is a labeled estimate from the review count, not exact sales.

How much revenue did Riichi City - Japanese Mahjong make?

Riichi City - Japanese Mahjong is free to play, so there is no copy-sales revenue to estimate.

How big is Riichi City - Japanese Mahjong?

Estimated owners: ≈ 113k–184k; from 5k reviews (Mixed)

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 Riichi City - Japanese Mahjong out and predicted the genre from its 8 similar games. Every figure here, including Riichi City - Japanese Mahjong's, is estimated from Steam reviews, not self-reported sales.

Copies, estimated from reviews

typical (middle half) 3.9M–7.4M

best case 40.0M (Wallpaper Engine)

The Anime genre

All 8 of your similar games are hits. A big, proven genre for a game like yours.

A hit here: 1,000+ reviews, roughly $150k+ before Steam's cut (a standard indie benchmark).

A typical game

≈ 3.9M–7.4M copies

≈ $4.6M–$11.8M after Steam's cut

from ~128k reviews

Best case

≈ 30.5M–49.6M copies

Wallpaper Engine · ≈ $41.9M–$112.5M after Steam's cut

A breakout hit, far above a typical game.

The genre you'd be entering

Your set: Your set clusters on Anime (6 of 8) and Sexual Content (4 of 8).
The winners: Winners here lead with Mature + Utilities, priced around $5. The breakout hits carry Utilities + Software + Design & Illustration; a typical game here doesn't.
The era: The games you compared span 2017 to 2024, a genre with a long track record.

Copies and revenue are rough lifetime estimates from the review count.

Similar games

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Doki Doki Literature Club! 2017	Est. copies ≈ 7.7M–12.5M 1.8x vs typical SteamSpy 5M–10M	Est. revenue Free	Free	224k reviews Overwhelmingly Positive	Psychological Horror Visual Novel
MiSide 2024	Est. copies ≈ 3.4M–5.5M SteamSpy 1M–2M	Est. revenue $13.9M–$37.3M after Steam's cut $25.2M–$57.4M before the cut	$14.99	140k reviews Overwhelmingly Positive	Psychological HorrorCute
VRChat 2017	Est. copies ≈ 9.1M–14.9M 2.1x vs typical SteamSpy 20M–50M	Est. revenue Free	Free	266k reviews Mostly Positive	VRFree to Play
Wallpaper Engine 2018	Est. copies ≈ 30.5M–49.6M 7.9x vs typical SteamSpy 20M–50M	Est. revenue $41.9M–$112.5M after Steam's cut $76.1M–$173.1M before the cut	$4.99	1.0M reviews Overwhelmingly Positive	MatureUtilities
Muse Dash 2019	Est. copies ≈ 3.5M–5.7M SteamSpy 2M–5M	Est. revenue $2.9M–$7.7M after Steam's cut $5.2M–$11.9M before the cut	$2.99	122k reviews Very Positive	MusicRhythm
Helltaker 2020	Est. copies ≈ 3.4M–5.5M SteamSpy 2M–5M	Est. revenue Free	Free	128k reviews Overwhelmingly Positive	Free to PlayCute
Mirror 2018	Est. copies ≈ 2.6M–4.2M SteamSpy 2M–5M	Est. revenue $1.4M–$3.8M after Steam's cut $2.5M–$5.8M before the cut	$1.99	84k reviews Overwhelmingly Positive	Sexual ContentNudity
A Dance of Fire and Ice 2019	Est. copies ≈ 2.4M–3.8M SteamSpy 2M–5M	Est. revenue $3.9M–$10.5M after Steam's cut $7.1M–$16.1M before the cut	$5.99	82k reviews Very Positive	RhythmMusic