Illegal Mahjong

Illegal Mahjong

AleCubicSoft · 2024 · Nudity, Sexual Content, Mahjong, Adventure, Female Protagonist

PC
Very Positive82% · 145
Best price
$6.99
lowest tracked $4.89
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Steam
Steam
Standard Edition · Steam
$6.99
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Screenshots

About Illegal Mahjong


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?

In this game, you control Yuri and compete in mahjong against various opponents.
If you manage to score the highest points by the end, you can repay the debts all at once. If any of the opponents surpass Yuri's score, it's game over for her.
Moreover, unlike regular mahjong, you can acquire skill points during the mahjong matches which Yuri can use to learn cheating skills.
Unlock these cheating skills and climb your way to victory against high-ranked tables with an advantage.
  • Full voiceover for the heroine
  • Mahjong skills can be utilized

DLC & expansions

🎁 Complete the collection

Base game + 0 of 1 DLC at today's best prices (some DLC unpriced).

$6.99
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended Aug 11, 2024
You need to already know how to play Japanese Mahjong, as there is no tutorial. You can look up a guide but for me it's way more effort than I'm willing to put in for a game of this genre. Other than that, the game is well made, you unlock static CGs on defeat, with good voice acting and sfx.
6 found this helpful
Not recommended Mar 15, 2025
you have to skip some weirdo sex stuff to get to the mahjong
5 found this helpful
Recommended Mar 28, 2025
Bought for ecchi game, Enjoyed for riichi mahjong.
2 found this helpful
Recommended Oct 14, 2025
too easy i couldnt see the porn
1 found this helpful
Recommended Jan 25, 2026
Illegal Mahjong is a strikingly unconventional take on a classic tabletop game, reimagined through a dramatic narrative lens and layered with progression systems more commonly associated with RPGs than traditional mahjong simulators. Developed by AleCubicSoft and published by OTAKU Plan, the game frames its tile-based matches around the personal downfall and desperate struggle of its protagonist, Yuri. Once the daughter of a successful family, Yuri finds herself dragged into a spiral of financial ruin when her father’s business collapses, leaving mahjong not as a leisurely pastime but as a last-ditch method of survival. This framing immediately sets the game apart, transforming what could have been a purely mechanical experience into one driven by personal stakes and narrative urgency. At its core, Illegal Mahjong remains grounded in authentic mahjong rules, demanding an understanding of tile combinations, probability, and long-term planning. Matches unfold with a deliberate pace, encouraging players to read the table, anticipate opponents’ hands, and balance aggression with restraint. Where the game diverges from tradition is in its layered progression system, which rewards succe…
Recommended Nov 3, 2025
Teetering between yay and nay on the recommended. Thumbs up only because it is an enjoyable Mahjong game IF you already know how to play Mahjong...which I don't. I recognize that the game serves it purpose and is a good indie version with a story and R18 content (needs an off site patch), but I do wish it had some sort of tutorial to teach newbies how to play Mahjong. Watching YT tutorial videos while playing, still didn't help me to understand Mahjong. Avoid if you don't know how to play Mahjong or have no plans to learn. As far as the story goes, I'm guessing it needs that offsite patch, because there was no story present, it just tosses you right in the game.

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