In-app purchases
65 reviews
Content rating
Mature 17+
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About this game

The unparalleled, visceral experience of mahjong made available on smartphone.
■Free play
Play full-feature Japanese Riichi Mahjong against real opponents without making in-app purchases.
■Now Available in English!
Fully localized, including in-game text and commentary.
■Play online with people around the world!
Have a game of Japanese Riichi Mahjong anywhere at any time with people around the world.
■User-friendly interface
Intuitive controls allow anyone to jump right into the excitement.
Help features tell you how many tiles are needed to Tenpai, what to discard to be ready, what tiles will complete the hand, and what tiles are safe against other players.
■Live commentary!
Real-time commentary simulates the excitement of a live mahjong telecast.
■What is Japanese Riichi Mahjong?
Mahjong is a popular tabletop game in Japan.
The game is played with 4 people and 136 tiles (34 different types of tiles).
Players compete to create winning combinations of 14 tiles to be the first to take points from other players.
This will be repeated multiple times and the player with the most points at the end of the match will win.
■SEGA NET MAHJONG MJ is for people who:
-Are interested in Japanese Riichi Mahjong.
-Want to practice playing Japanese Riichi Mahjong by them selves.
-Want to try Japanese Riichi Mahjong. (Auto-play function included)
-Love games made by SEGA!
-Are looking for a new SEGA game to play!
-Are looking for a new free mobile game.
-Enjoy playing competitively online.
-Enjoy table games.
-Have played mahjong before.
*Play never results in cash exchanges.
*MJ is recommended for adult players who are already fans of Japanese Riichi Mahjong or who wish to learn to play the game for the first time.
This application uses CRIWARE (TM) by CRI Middleware Co., Ltd.
Updated on
Jun 14, 2021

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65 reviews
Nik Selvidge
July 30, 2020
Pretty good so far, hopefully Sega keeps it updated in English. Very simple and straightforward, finds a match quick. Odd that they decided to bring it over here now, since apparently the app came out in 2013 in Japan(according to a Google search). The app does feel a little dated in appearance, but works fine. No real complaints. Commentary in English is hilariously cheesy, in the best possible way. Almost makes the whole game for me, because it's so over the top for something so mundane. Would like a simple tutorial, with a glossary of terms and list of possible hands(similar to what has been included in the Yakuza games). Would be helpful for newer players, and people like me that can't remember what half the terminology means.
11 people found this review helpful
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Abel Rivera
July 30, 2020
A very good riichi mahjong app in the sea of matching games. It has some nice assist features if you're still learning like me. The music, sound effects, and commentator add some intensity to what is usually a pretty quiet game. My only complaint is that it doesn't seem to have the proper aspect ratio for my Google pixel. A very good localization job overall and definitely worth playing.
4 people found this review helpful
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Kevin Cushman
July 31, 2020
I've played a bunch of matches now. Gameplay is quick and fluid, commentary is fun but gets repetitive. The app is very bare bones so far, hopefully they decide to port over more features such as private rooms and a tutorial for beginners so I can get others playing. I wouldn't say no to some gacha characters either. Still, if you already know how to play and want to play on your phone, this is a great way to do it.
8 people found this review helpful
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What's new

■Taiwan release of MJ, the ultimate online Riichi Mahjong game by SEGA!
 Real-time commentary with thrilling online play!
 Fully localized, including in-game text and commentary!
  *Text addition: Traditional Chinese
  *Voice addition: Chinese
■VIP ROOM added!
 The number of Chips required will vary based on your score for more thrilling gameplay!
■Casino Mode added!
 Play Slots and Poker, 7 types of games in all.
■Private Match added!
 Play private matches by creating your own room.