
Mahjong & Mahjong: Riichi
Learn rules, yaku & scoring
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Free
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About
New to Japanese riichi mahjong? Start with short lessons on tiles, winning hands and the flow of a turn. Then try four-choice questions to check what you have understood.
Practice the decisions behind a hand:
• Recognize yaku and work through scoring questions.
• Identify waits and shanten, and consider which tile to discard.
• Read explanations after answering.
• Return to wrong answers and bookmarked questions when you want to review.
• Follow your learning progress and daily streak.
This is a learning and practice app for Japanese riichi rules. It does not promise wins at the table.
Learning features are free with ads. An optional one-time purchase removes ads; it is not a subscription. The app is available in English and Japanese.
Privacy Policy: https://kazusa703.github.io/privacy.html
Terms of Use: https://kazusa703.github.io/terms.html
Support: https://kazusa703.github.io/support.html
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What's New in Mahjong & Mahjong
1.3
October 24, 2026
• The app is now available in 31 languages. • New: Decision practice. Answer five questions per section and check each explanation. The first set in each road is free. • Remove Ads is now Pro: no ads, plus every decision practice set and comprehensive practice. If you already bought Remove Ads, you already have Pro.
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Subscriptions & In-App Purchases
$2.99
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