Shikaku: Logic Number Puzzle

IgniteWebStudio

Contains adsIn-app purchases

About this game

Shikaku is a relaxing logic puzzle with one simple rule and endless depth: divide the grid into rectangles so that each rectangle contains exactly one number — and that number equals the rectangle's area.

Easy to learn, hard to put down. No clutter, no pressure — just you, the grid, and that satisfying click when everything fits.

WHY YOU'LL LOVE THIS PUZZLE
• One rule, infinite puzzles — every board has a single, logical solution
• Zen mode: solve at your own pace, zero pressure
• Time Trial: race the clock for a real challenge
• Daily Challenge: a fresh logic puzzle every day, resets at 9 AM your time
• 100% offline — play on a plane, a subway, anywhere, no internet needed
• Clean, cozy design that's easy on the eyes
• Handmade sound and a calm soundtrack
• Unlock color themes and pixel avatars as you progress

HOW TO PLAY SHIKAKU
1. Tap and drag to draw a rectangle
2. Each rectangle must hold exactly one number
3. The number = how many cells the rectangle covers
4. Fill the whole board with no gaps or overlaps — solved!

That's it. No tutorials to sit through, no energy bars, no waiting. Shikaku (also known as Divide by Box or Rectangles) is a classic Japanese number puzzle, and this is the calmest way to play it on Android.

A BRAIN TEASER FOR PUZZLE LOVERS
If you enjoy Sudoku, Nonogram (Picross), Kakuro, Hashi, Slitherlink or other Japanese logic and number puzzles, Shikaku will be your new favorite. Every grid is a small, self-contained problem in logic and area — no guessing required, ever. Pure deduction.

Play a quick puzzle on your commute, or sink into a long session in Zen mode. Shikaku works offline, so it's always there when you need something calm to focus on.

Free to play, with optional Shikaku Premium.

SHIKAKU PREMIUM (optional)
• Remove all ads and play without interruptions
• Free hints on every level — no coins needed (up to 2 per level)
• Support a small studio making calm puzzle games with care

Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Google Play account settings.

Privacy Policy: https://shikaku.ignite-web-studio.com/privacy
Terms of Use (EULA): https://shikaku.ignite-web-studio.com/terms

Questions or ideas? We read every message: [e-mail]

What’s new

Welcome to Shikaku — our very first release!

Divide the grid into rectangles: each one holds exactly one number, and that
number is its area. One rule, endless puzzles.

• Zen mode — solve at your own pace, no timers
• Time Trial — race the clock
• Daily Challenge — a fresh puzzle every day
• 100% offline — play anywhere
• Color themes and pixel avatars to unlock

Thanks for playing. Questions or ideas? [e-mail]