The Game Census
Illegal Mahjong cover art

Illegal Mahjong

AleCubicSoft · OTAKU Plan · 2024-01-11

Steam

AdventureIndieRPG

Modes: Single player

Releases: Jan 11, 2024 (PC (Microsoft Windows))

Yuri, the former heiress of a company, finds her father's business bankrupt. To repay the debts, Yuri must compete in mahjong and continue to win. Can Yuri truly defeat her formidable opponents?

Illegal Mahjong is an Adventure, Indie, and RPG game released in 2024, priced at $4.89, with a Very Positive review sentiment (84% of 173 reviews) and an owner estimate of 0 .. 20,000.— census verdict as of 2026-09-20

84%
positive of 173 reviews
Very Positive
steam's rating (official)
0–20,000
owners (SteamSpy est.)
Unknown
Steam Deck (Valve)
SteamOS: 0
$4.89
steam price (US)

Health check

Quiet
  • · 22 reviews in the last 8 weeks (~3/week).
  • · Review velocity down 15% vs the prior 8 weeks.
  • · Top 31% of 28,692 Adventure games in the census by review count.
Estimated sales: 3.5k–7.8k copies

Review-multiple estimate from 173 total reviews — how this is computed.

All-time low: $4.89 at Steam (2025-06-27)via IsThereAnyDeal

12-month high $6.99 · on sale 7 of 14 observed days (census price snapshots)

Review momentum

PositiveNegative
363620242026Week of 2024-01-01: 36 positiveWeek of 2024-01-01: 5 negativeWeek of 2024-02-01: 11 positiveWeek of 2024-03-01: 6 positiveWeek of 2024-04-01: 5 positiveWeek of 2024-05-01: 6 positiveWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 3 positiveWeek of 2024-06-01: 5 negativeWeek of 2024-07-01: 3 positiveWeek of 2024-07-01: 3 negativeWeek of 2024-08-01: 2 positiveWeek of 2024-08-01: 2 negativeWeek of 2024-09-01: 3 negativeWeek of 2024-10-01: 3 positiveWeek of 2024-11-01: 4 positiveWeek of 2024-12-01: 5 positiveWeek of 2025-01-01: 2 positiveWeek of 2025-02-01: 2 positiveWeek of 2025-02-01: 2 negativeWeek of 2025-03-01: 7 positiveWeek of 2025-03-01: 1 negativeWeek of 2025-04-01: 4 positiveWeek of 2025-05-01: 1 positiveWeek of 2025-06-01: 1 positiveWeek of 2025-07-01: 2 positiveWeek of 2025-07-01: 1 negativeWeek of 2025-08-01: 2 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 4 positiveWeek of 2025-10-01: 3 positiveWeek of 2025-10-01: 1 negativeWeek of 2025-11-01: 3 positiveWeek of 2025-11-01: 1 negativeWeek of 2026-01-01: 2 positiveWeek of 2026-01-01: 1 negativeWeek of 2026-02-01: 1 positiveWeek of 2026-03-01: 2 positiveWeek of 2026-03-01: 2 negativeWeek of 2026-04-01: 1 positiveWeek of 2026-05-01: 1 negativeWeek of 2026-07-01: 3 positive
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Price history

$6.99$4.892024-01-122026-08-172024-01-12 — best price $6.292024-03-14 — best price $5.592024-04-29 — best price $5.592024-06-23 — best price $5.592024-08-05 — best price $5.592024-09-23 — best price $5.592024-11-21 — best price $5.592024-12-19 — best price $5.592025-01-23 — best price $5.592025-03-13 — best price $5.592025-04-24 — best price $5.592025-06-27 — best price $4.892025-08-11 — best price $4.892025-09-22 — best price $4.892025-11-03 — best price $4.892025-12-18 — best price $4.892026-02-09 — best price $4.892026-03-19 — best price $4.892026-04-30 — best price $4.892026-06-25 — best price $4.892026-08-10 — best price $4.892026-08-17 — best price $6.99
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

8
achievements tracked
72.7%
earned "Rank2"
49.2%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerFamily Sharing1 DLC

3 supported languages: Japanese, English, Simplified Chinese

Post-launch support: 1 DLC released, first 2024-01-27 (Steam store data)

Player tags

RPGCuteJRPGNSFWAnimeDramaNudityMahjongColorfulAdventure

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Wanderlust AdventuresTanziaOmensight: Definitive EditionWeapon Shop FantasyEternity: The Last UnicornDungeon Of Dragon KnightCHANGE: A Homeless Survival ExperienceTorchlight III

Similarity via IGDB.

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