# RIICHI ORBIT: Mahjong — Learn Japanese mahjong

> Learn Japanese mahjong (iPhone/iPad app by Shinichi Doui.)

- Source: https://appshunter.io/ios/app/riichi-orbit-mahjong/id6797684752 (this page in markdown: same URL + `.md`)
- Developer: [Shinichi Doui](https://appshunter.io/developer/1887162153)
- Category: Games, Board, Strategy
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 896 MB
- Languages: American English, Japanese
- Released: 2026-09-01
- Data updated: 2026-09-29
- User reviews in markdown: https://appshunter.io/ios/app/riichi-orbit-mahjong/id6797684752/reviews.md

## What is RIICHI ORBIT?

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.

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.


## Version history (last 5 releases)

### 1.5 — 2026-09-28

Orbit matches are here. Equip skills and choose when to attack or defend.
Match results now show wins and skill outcomes more clearly.
We improved table information and controls in portrait and landscape.

### 1.4 — 2026-09-18

• Meet five new rivals at the Earth Cadet Table. Practice with gentle Lv. 0 AI, helpful advice, and Photon Barrier—no Lumina needed.
• Play in English. Lessons, menus, and in-game advice are localized, with language switching in Settings.
• Take a closer look at every rival's individual markings and improved textures.

This update also makes Photon Barrier easier to use and improves navigation, call controls, text layout, and yakuman achievement records.

### 1.3 — 2026-09-14

・宇宙生物の造形を改良。可愛らしさを残し、形や質感を細部まで作り込みました。
・SRカードを獲得した宇宙生物を、3Dで回転・拡大して鑑賞できます。
・カードや進行、ルミナを新しい端末へ引き継げるようになりました。
・リプレイからの打ち直しや同じ配牌での練習、省電力モードを追加しました。

### 1.2 — 2026-09-12

宇宙生物たちと、もっと身近な一局を。

・宇宙生物が3Dの卓に着席。それぞれの動きや、ランカー専用の登場演出を追加しました。
・地球に2つの学習基地を用意。ミオとノアの会話で学ぶ、全17回の点数計算講座を追加しました。
・講座の教材を会話履歴から開き直せるようにしました。点数表の拡大表示や、修了後の見返しにも対応しました。
・13翻以上の和了を「数え役満」とし、記念カードを追加しました。
・卓や対戦相手の拡大、鳴き・和了時の表示を改善しました。星冠戦の席順は対局ごとに抽選します。
・Orbit AIの助言を改善。助言ありの対局では、指摘を確認して打牌を選び直せます。
・航海用ptを「ルミナ（Lm）」に名称変更しました。これまでの残高は同じ数値で引き継がれます。任意で購入できる「濃縮ルミナ」も追加しました。
・広告の準備状況や、再生できないときの案内を改善しました。
・iPadの会話表示、初回案内のスキップ、設定から読み返せるお知らせなど、遊びやすさを改善しました。

### 1.1 — 2026-09-08

はじめての一打から、憧れの役満まで。宇宙の麻雀旅が、もっと遊びやすくなりました。

・初心者向けチュートリアルを充実
麻雀を全く知らない方も、牌の基本や手番から、実際に操作しながら学べます。

・役満演出とコレクションを追加
役満の和了演出と、対局完了後に受け取るカード報酬など、集める楽しみが増えました。

・対戦AIを改善
Orbit AIの判断と読みを改善しました。

・任意の広告視聴を導入
広告視聴で対局後の獲得ptを2倍にしたり、星冠戦の参加に必要なptを2分の1にしたりできます。

・UIと操作性を改善
卓や牌、説明、ボタンなどの表示を見直し、iPhone・iPadで遊びやすくしました。

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All apps by Shinichi Doui: https://appshunter.io/developer/1887162153

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*