← Koi-Koi

Support

Need help or found a problem? Email support and include your device model and iOS version. We aim to reply within a few days.

Frequently asked questions

How do I play? Tap "Learn to play" on the home screen for a three-lesson tutorial, or "Scoring & rules" for every scoring combination (yaku).

Is there an internet connection or account? No account. The game plays fully offline and nothing is collected; only buying or restoring the full game contacts Apple's App Store.

Are there ads or in-app purchases? No ads, ever. From version 1.1 Koi-Koi is free to download: the tutorial, rules and your first 3 matches are free, and one in-app purchase, Full Game, unlocks everything for good. No subscription. If you bought the app before 1.1, you already have everything. To restore the purchase on a new device, open Settings and tap Restore purchase.

The music or sound is off. Open Settings on the home screen to turn music and sound effects on or off, and check your iPhone's silent switch.

Can I change the table and music? Yes. In Settings pick a venue, or leave it on Auto for a new venue each round.

サポート

ご不明な点や不具合は メールでお問い合わせ までご連絡ください（端末の機種とiOSのバージョンをお知らせください）。遊び方はホーム画面の「遊び方を学ぶ」、役の一覧は「役とルール」からご覧いただけます。本アプリはオフラインで動作し、広告はありません。バージョン1.1から無料ダウンロードになり、チュートリアル・ルールと最初の3試合は無料、アプリ内課金「フルバージョン」（買い切り）ですべて解放されます。1.1より前に購入された方はそのまますべて遊べます。