Free
In-App PurchasesWith Ads
About
No time to overthink. 20 FLIP is speed reversi: 20 seconds per move.
— How to play —
Play fast rounds on a compact 6x6 board against the CPU, 20 seconds per move. Win and your streak grows as tougher CPUs step in. Lose, and you can watch a rewarded ad to retry with the same streak and the same opponent.
Beyond speed mode, the app also includes standard 8x8 reversi: play solo against the CPU, or pass-and-play with a friend on the same device.
— Who it's for —
• Quick brain breaks between tasks
• Reversi/Othello fans who want a faster pace
• Anyone chasing a longer win streak
• Friends or family playing pass-and-play
— Features —
◎ 20-second speed mode
6x6 board, 20 seconds per move, tougher CPUs as your streak grows.
◎ Streak rescue (rewarded ad)
After a loss, watch an ad to retry with the same streak and opponent.
◎ Classic 8x8 & 2-player
Standard reversi rules, solo vs CPU or local pass-and-play.
◎ 20 FLIP+ (one-time purchase)
Unlocks detailed stats (wins/losses/win rate) and board themes.
◎ Fully offline
— Privacy —
No account required. Game data is stored on-device. Rewarded ads are served via Google AdMob.
— Support —
Questions or feedback: see the support page.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in 20 FLIP
1.0
August 18, 2026
1
In-App Purchases
$2.99
20 FLIP+
勝敗内訳・勝率などの詳細成績と盤面テーマを無制限に使えます。一度の購入でずっと有効です。



