About Fillomino
Divide the grid into connected numbered regions. Each number gives its region’s area, and regions of the same size cannot share an edge.
How to play
- Goal
- Fill the map with numbered provinces, each containing exactly as many cells as its number.
- How it ends
- A map is solved when every cell belongs to one correctly sized province; there is no way to lose.
- Record
- The fastest first solve of each map, with its holder's name.
- Select 1–5, then ink blank cells so every connected run of N contains exactly N cells.
- Separate provinces of the same size cannot share an edge, and every province grows from at least one printed boundary-stone.
- Fill every cell with correctly sized provinces to awaken the map.
Controls
| Input | Action |
|---|---|
| Select 1–5 | Choose the number to ink |
| Tap / click / drag | Ink one cell or a run of cells |
| Erase / right-click | Clear a cell |
| Arrow keys + 1–5 | Move and write with the keyboard |
| Z / R / Escape | Undo, restart, or return to the atlas |
Good to know
All 240 maps are open, deterministic, uniquely solved and ordered within each atlas by measured deduction difficulty. A hint explains and fills one forced cell but makes that attempt practice-only. Progress, first-solve time, sound and reduced-motion preference persist in this browser.
Watch how to play
Did you know?
A Fillomino number does two jobs at once: it labels a region and tells you its area. Two neighbouring regions of the same size would merge, which is why that contact is forbidden.
Source: Nikoli: Fillomino
