RIICHI ORBIT: Mahjong
Learn Japanese mahjong
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Start with your first tile. Learn Japanese riichi mahjong through guided lessons, then practice against AI at your own pace.
RIICHI ORBIT brings a four-player mahjong table to your iPhone or iPad. Play solo against three AI opponents, with no turn timer and advice when you need it. English and Japanese are both supported. You can also equip special abilities for Orbit matches, with 10 skills to discover.
CREATE YOUR OWN 3D CHARACTER
Choose hair, face, build, height, uniform, colors, and voice. Equip accessories and bring creatures from collected cards as shoulder companions or active characters. Your avatar appears at the table and in win scenes.
LEARN BY MAKING THE MOVES
You don't need to know the rules before you start. Join Mio, a fellow beginner, and Noa, your space navigator. Tap the tiles and play through guided situations while Noa explains what happens.
Explore guided lessons, from the basics to advanced hands and scoring:
• Recognize the tiles, take turns, and build a winning hand.
• Learn yaku: the patterns and conditions a hand needs to win.
• Try riichi and calls, and learn how furiten and defense work.
• Understand scoring with worked examples and practice questions.
Return to completed lessons whenever you want a refresher. Start small, and keep learning as you play.
A FRIENDLY TABLE ON EARTH
Put what you've learned into practice at the Earth Cadet Table. Choose three opponents from five friendly creatures and play against gentle AI with advice available throughout the match. No in-game currency is needed. Try Photon Barrier to stop rivals from winning on your next discard, and earn creature cards as you improve.
PLAY SOLO, THINK AT YOUR OWN PACE
Already know the rules? Head straight to the Moon. Play East-only or East–South matches against Orbit AI. Ask your navigator for a suggested discard and the reasoning behind it. Advice uses your hand and information visible at the table.
EQUIP SKILLS FOR ORBIT MATCHES
Finish your first standard match to unlock Orbit matches and receive Reboot Core, which lets you choose between two starting deals. No first-place finish is required.
Ranker R cards unlock regular skill slots; SR cards unlock Eternal Slots that recharge every match. Refill regular slots with Lumina or through your match results. Collect all of a planet’s SR cards to earn a master unit that needs no Lumina charging. Equip one master and up to two skills, then choose when to use them. Standard matches can also earn cards and skills.
MEET RIVALS AND COLLECT THEIR CARDS
Finish above a rival to earn their creature card. Collect rare rewards to unlock SR creature cards and view each creature in 3D. Rotate, zoom, and explore the details, from patterned wings to decorated shells. Special cards also record your yakuman achievements.
EXPLORE BEYOND EARTH
Earn Lumina, the in-game currency, through regular matches and challenges. Meet each route's requirements to reach new planets and rivals. Route matches feature regular rivals. Star Crown matches also let you challenge rankers and award twice the placement Lumina of route matches.
REVISIT A DECISION
Review saved matches, inspect hands and discards, and try a different move from a saved position. Lessons and AI matches work offline. Content updates, optional rewarded ads, purchases, and save transfers require an internet connection.
MADE FOR IPHONE AND IPAD
Play in portrait or landscape. Switch between English and Japanese anytime in Settings.
Free to play, with optional rewarded ads and in-app purchases. Lumina purchases replenish in-game currency; they do not buy cards, guarantee wins, or bypass route achievement requirements. Creature cards stay in your collection, while unlocked skill cards can be equipped in Orbit matches. Cards have no cash value. You never wager cards or money.
Moving to a new device? Create a transfer code in Settings to move your cards, progress, and remaining Lumina. Codes last seven days; replay files do not transfer.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed the companion list in Customization so it only shows characters whose R or SR cards you have earned.
New players now receive one welcome accessory ticket. Tickets already granted and accessories already earned remain available.
The developer, Shinichi Doui, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shinichi Doui
- Size
- 953.1 MB
- Category
- Board
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- 濃縮ルミナ 1000 $5.99
- 濃縮ルミナ 420 $2.99
- 濃縮ルミナ 120 $0.99
- Copyright
- © 2026 Shinichi Doui