Shikaku Zen: Rectangle Puzzle

A quiet place to think. Divide beautiful grids into rectangles — one number per box, one perfect solution per puzzle.

Shikaku is Japan's most elegant logic puzzle. Divide the grid into rectangles so that every rectangle contains exactly one number — and that number equals its area. Simple to learn, deeply satisfying to master.

Shikaku Zen wraps that classic rule in calm: soft washi paper, gentle haptics, warm koto sounds, and a friendly koi to keep you company. It's a pocket of quiet in a noisy day.

• 100 hand-shaped levels across five packs, from gentle 5×5 grids to deep 9×9 challenges • A fresh daily puzzle with streaks to keep the habit • Every puzzle is generated on your device and guaranteed to have exactly one solution • Draw rectangles with a natural drag; tap to erase; unlimited undo and gentle hints • Beautiful in light and dark • Play fully offline — anywhere, anytime

No ads. No account. No tracking. Just puzzles.

SHIKAKU ZEN PRO Unlock all four advanced packs — Blossom, Stream, Stone and Master (80 extra levels) — with a yearly subscription or a one-time lifetime purchase. The daily puzzle and the first pack are always free.

Payment is charged to your Apple Account. A yearly subscription renews automatically unless cancelled at least 24 hours before the period ends; manageor cancel anytime in your Account settings. The lifetime option is a single purchase.

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