Fillomino – Number Blocks

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)