Shikaku: Rectangle Puzzle Game

Fill the grid with rectangles. A relaxing logic puzzle with daily challenges.

Shikaku is the rectangle puzzle game that trains your brain one grid at a time.

Draw rectangles on the grid. Each rectangle must contain exactly one number — and that number tells you the exact area of the rectangle. Fill every cell. Leave no gaps. That's the whole game.

Easy to learn. Endlessly satisfying.

HOW TO PLAY:
• Each number on the grid defines one unique rectangle
• The area of that rectangle must equal the number exactly
• Fill the entire grid — no cell left empty, no overlap allowed
• Use pure logic — there is no guessing in Shikaku

WHAT'S INSIDE:
✓ 1,000+ Shikaku puzzles across Classic, Zen, and Time Attack modes
✓ Daily Challenge — a fresh rectangle puzzle every day
✓ Build your daily streak and compete on the leaderboard
✓ Difficulty levels — from small 5×5 beginner grids to challenging 12×12 expert boards
✓ 3 visual themes — Dark, Light, and Kit (2D arcade style)
✓ Play offline — no internet required, anytime anywhere
✓ Undo system — fix any mistake instantly
✓ Hint system — never get permanently stuck
✓ Energy recharges automatically — no pay-to-play walls

PERFECT FOR LOGIC PUZZLE FANS:
If you love Sudoku, Nonogram, or Kakuro, Shikaku offers the same pure logic experience with a refreshing mechanic. No random elements. No luck. Just clean deduction.

A great brain game for adults who want to sharpen logical thinking during commutes, breaks, or quiet evenings. This is number puzzle gaming without the noise.

DAILY PUZZLE & STREAK:
A new Shikaku grid is waiting every single day. Complete the daily challenge to keep your streak alive. Every level has one perfect solution — find it through logic alone.

PLAY YOUR WAY:
• Classic Mode — solve puzzles at your own pace, no time pressure
• Zen Mode — minimalist, distraction-free rectangle puzzle experience
• Time Attack — race the clock for a real brain training challenge

No forced ads during puzzle solving:
Shikaku respects your focus. The game is free to play with optional upgrades. No pop-ups mid-puzzle. No forced video ads between levels.

Challenge your brain. Fill the grid. Download Shikaku free today.