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Island Radio now starts when you tap a station. Improved music startup and audio focus, reliable station switching, and visible playback status with a retry option.
Connect numbers and explore 60 adventures. Line and logic puzzles, offline.
One line, a clever route: Kettro combines line puzzles and number puzzles with a colorful island world. Plan your next move, discover new paths and enjoy a thoughtful logic challenge at your own pace. CONNECT THE NUMBERS In classic number puzzles, start at 1, connect the numbers in ascending order and visit every square exactly once. Walls turn a simple line into a satisfying route-planning challenge. 60 ADVENTURES IN 10 WORLDS Explore islands with their own goals and rules. Keys, doors, switches and portals bring variety to each journey. Choose a stage and use Undo or planning tools to try a different route. YOUR DAILY PUZZLE BREAK • A daily puzzle and an unlockable bonus puzzle • Endless mode with three difficulty levels and shareable puzzle codes • Rush: three puzzles in a row • An archive of puzzles from the last 60 days • Streaks, medals, badges and personal best times Puzzles work offline, with no account or in-app purchases. Progress is stored locally. The game offers eight languages; not every language used in its store listings is available in the game. Kettro occasionally shows ads for our own games. Usage statistics and crash reports are sent only with your consent.