The short answer first. If you searched for Casino Me mahjong hoping to play riichi mahjong against other people for money, this is very probably not where you will find it. A player-versus-player mahjong product existed here before and was retired; the game listings we can source describe mahjong as not currently offered.
Because expectation and reality diverge on this particular search, the useful thing this page can do is show you how to check for yourself and what to look at instead. Start with a sixty-second check.
- Search the lobby for both the Japanese and English spellings
Titles are sometimes indexed under one and not the other. - Walk the provider filter once
You are looking for studios that carry Asian-themed tables and slots at all. - Open the game-show and table categories too
Tile-themed products do not always sit on the slot shelf. - If something turns up, read its info panel before spinning
Weighting and the bonus-excluded flag matter more than the theme. - If nothing turns up, that is your answer
You can ask support, but Japanese live chat runs 16:00-24:00 JST by one account and 15:00-01:00 by another. It is not around the clock.
[VERIFY: current mahjong title availability] Everything here rests on Japanese reviews published in 2026, which state that mahjong is not currently offered. Lobbies change whenever supplier contracts change, so tile-themed titles could appear without any review noticing. The live lobby search is the only authority.
Riichi mahjong and mahjong-themed slots are different products
This distinction is the most useful thing on the page, and it is the one that search results routinely blur.
The first product is riichi mahjong: four people at a table, real stakes, and a large skill component in which what your opponents do directly shapes your result. The house supplies the venue and the settlement, nothing else.
The second is a slot or table game wearing tile artwork. Your opponent is a random number generator. There are no other players. However convincing the hand names look, your decisions only matter inside whatever the paytable allows, and the long-run return is a designed RTP printed on the info panel.
The gap between the two runs through everything that matters: the legal position, the amount of skill that pays, and the wagering weighting. A tile-themed slot might weight at 100%. A tile-themed table game might weight at 5% or 10%. If it lands on the excluded list, it weights at 0%. "Mahjong" is not a weighting category, so there is no single answer.
There is no mahjong row in the weighting table
The published weighting ladder lists slots, video poker, blackjack, live casino, roulette, baccarat and a set of 0% titles. Mahjong is not on it.
That is why this page does not publish a per-title weighting list for mahjong games. No source publishes one. We could assemble something that looked authoritative, but you would be making a money decision on numbers we invented, which is worse than an admitted gap.
Practically: treat the weighting of any tile-themed title as unknown until its info panel says otherwise, and never use an unknown-weighting game to clear a bonus. Exhaust the routes where 100% is stated in writing first — that argument is worked through on the slot clearing page.
| Item | Detail |
|---|---|
| Minimum deposit | $20 |
| First match | 100% up to $377 + 77 free spins |
| Package cap | $777 across four deposits |
| Wagering | 20× casino / 10× sportsbook |
| Max bet while clearing | $5 casino / $50 sportsbook |
| How you get it | Cashier opt-in, not automatic |
Where mahjong for stakes actually sits in Japanese law
This part does not get softened. Article 185 of Japan's Penal Code addresses gambling, and Article 186 covers habitual gambling and running a gambling operation. Four people playing mahjong for money is the textbook fact pattern those articles were written for.
Integrated-resort casinos exist under separate legislation, are licensed onshore and admit players from age 20. Offshore online casinos sit outside that regime entirely, and arrests of Japanese players have been reported.
Worth being precise about one thing: swapping riichi for a tile-themed slot changes the nature of the game, not the position of an offshore casino account. The skill question and the legal question are separate, and the second one does not soften because a random number generator is dealing.
We do not tell readers that offshore online play is legal, because it is not something anyone can honestly say. The position and the reported cases are set out on Japanese gambling law and offshore casinos. Nobody under 18 should be here at all.
What else at this brand scratches the same itch
Three things stand a reasonable chance of satisfying someone who arrived looking for mahjong.
Pachislot-styled slots come first. Titles such as Oiran Dream and Hawaiian Dream are described as being in the catalogue. Real pachinko and pachislot machines are not offered, but these borrow the presentation and the stop-button feel. They will most likely weight as slots, though the info panel is still the place that confirms it.
Crazy Pachinko is second — a live game show sitting alongside Crazy Time, Stock Market Live and Baruto Baccarat. It clears at the live rate of 10%, not the slot rate.
Third, if what you actually miss is sitting at a table with a human running it, the Real Dealer and Japanese-dealer live tables get closer to that than any tile-themed slot will. The full read on those, including how withdrawals work once you are playing at table stakes, is on the baccarat page.
Whichever you pick, real-money stakes accrue the 0.3% Cash ME rebate — but at heavily reduced rates away from slots, dropping to 0.03% on live tables and 0% on non-live baccarat. If you are only here to try something tile-adjacent, demo mode on the non-live titles costs nothing and answers the question in a couple of minutes.
If you want a definitive answer rather than a lobby search, ask the operator directly. Japanese live chat is reported at 16:00–24:00 JST, with one guide printing 15:00–01:00, and email at support@casino.me is accepted around the clock. Ask specifically whether any player-versus-player mahjong product exists and, if a tile-themed title is in the catalogue, what weighting it carries — those are two separate questions and support will answer them separately.
What this search can give you
- A repeatable way to check the lobby yourself
- The distinction between riichi mahjong and tile-themed RNG games
- Nearby options: pachislot-styled slots and Crazy Pachinko
- A rule for handling titles whose weighting is unknown
What it cannot
- Player-versus-player riichi mahjong, described as retired
- A per-title mahjong weighting list, which nobody publishes
- Hand-scoring tables or yaku payout charts
- Any assurance that stakes play is legal in Japan
FAQ
- Can I play mahjong for money at Casino Me?
- A player-versus-player mahjong game existed previously and was retired, and current listings describe mahjong as not offered. Searching the lobby in both Japanese and English is the fastest way to confirm today's position.
- What happened to the old mahjong game?
- The game line-up notes that a player-versus-player mahjong title used to exist and has been discontinued. No source we can find says anything about it returning.
- Are there mahjong-themed slots?
- Check the lobby search rather than trusting any list. A tile-themed slot is not riichi mahjong: your opponent is a random number generator and the return is a designed RTP shown on the info panel.
- What weighting would a mahjong title carry?
- There is no mahjong row in the published weighting table. It could be 100% as a slot, 5-10% as a table game, or 0% if excluded, so treat it as unknown until the game's info panel says otherwise.
- Is playing mahjong for stakes legal in Japan?
- Article 185 of the Penal Code addresses gambling and Article 186 covers habitual play and running a gambling operation. Mahjong for money is the classic fact pattern, and we do not tell anyone that offshore online play is legal.
- How do I check the lobby quickly?
- Search both spellings, walk the provider filter once, and open the game-show and table categories as well as slots. If nothing appears, that is the current answer.
- What should I play instead?
- Pachislot-styled slots such as Oiran Dream and Hawaiian Dream, the Crazy Pachinko game show, or the Real Dealer and Japanese-dealer live tables. Each sits in a different weighting band.
Where these numbers come from
We have no access to an operator back office. Every amount, multiplier and limit on this page is cross-read from Japanese-language reviews refreshed in 2026 (znaki.fm updated 21 July 2026, japanesecasino, betbaka, casinoonline.jp, casino-winnersclub) and the terms those reviews quote.
Where sources disagree we print both readings rather than pick one. Four conflicts are live. The operator and licence (Lemon Lama Limitada under Anjouan ALSI-202505046-FI2, versus Sweetspot N.V. under Curaçao 8048/JAZ2015-004). The bonus expiry, 30 days or 60. Whether a claimed Cash ME balance is wager-free cash or bonus money at 20×. And the VIP entry bar, where one guide prints $10,000 deposited over 60 days while another says the thresholds are not published at all. Live-chat hours also split between 15:00–01:00 and 16:00–24:00 JST. The primary source is always the terms and footer licence line on casino.me.
Found an error? Email contact@カジノミー.tokyo with the URL and the correct wording. We edit the HTML and move the update date.
Age, licence, responsible play
18+This site is not for anyone under 18. Japan’s integrated resorts use 20 and the operator’s own age rule applies to the product. Accounts are USD, so conversion costs land in both directions.
Guides refreshed in 2026 name Lemon Lama Limitada (Costa Rica) as operator under an Anjouan, Union of Comoros licence, ALSI-202505046-FI2. Earlier write-ups name Sweetspot N.V. in Curaçao under 8048/JAZ2015-004. The footer licence line on the live site is the only authority on which applies today.
Detail sits on licence & safety, Japanese gambling law on the legal page, and self-exclusion on responsible play.
Updated 20 Aug 2026 — contact@カジノミー.tokyo
The lobby search is the authority
What is on screen now outranks any review, including this one.