Fillomino – Number Blocks

Place a number and equal numbers link into a block—its size is the number itself. Just three rules, five sizes, and a fresh daily puzzle. No account, fully offline.

Place a number, and equal numbers join into a block. That number is the size of its block—nothing more to memorize. Just three simple rules.

Fillomino is a pure logic puzzle where you fill every cell of the grid with a number. No arithmetic, no guessing—only careful observation and clean deduction. From a gentle 5×5 to a demanding 11×11, it fits a spare minute on the train or a slow evening at home.

The three rules

• Fill every cell with a number.
• Cells of the same number, joined across or down, form a block exactly that many cells in size.
• Two blocks of the same size may not touch across or down (diagonal is fine).

Features

• Four difficulties: Easy (5×5), Medium (7×7), Hard (9×9), Expert (11×11)
• A new Daily Fillomino every day—everyone in the world gets the same puzzle
• Records: daily streak, best times, no-hint rate, and a solved calendar
• Blocks are colour-coded so the solution reads at a glance
• Pencil marks with auto-cleanup, plus a gentle mistake indicator
• A hint when you're truly stuck
• Dark mode, with a calm, paper-and-ink Japanese palette
• English and Japanese

Made for you if…

• You've solved every Sudoku and want the next number puzzle
• You want a clear head on your commute or before bed
• You're tired of ad-heavy, paywall-pushy puzzle apps
• You love a puzzle that's simple to learn and deep to master
• You enjoy watching your records grow, one day at a time

Play with peace of mind

• No account or sign-up required
• Your records stay on your device only—nothing is sent to any server
• Works fully offline (the daily puzzle is generated without a connection)