Numbox is a clean, one-rule logic puzzle: every grid has numbered cells, and you drag a rectangle around each number so the box’s area equals that number. Fill the board the way the numbers want, and the puzzle clicks into place.
One rule, endless depth
The whole game grows out of a single idea — area equals the number. Early boards are gentle and quick; later ones add a countdown timer and obstacle walls, and the difficulty curve keeps going as far as you do. Every level is generated to have exactly one solution, so it always feels fair.
Built for everyday play
There’s a fresh Daily Puzzle with a streak to keep, short satisfying sessions that fit a commute, full English and Vietnamese support, a colorblind-friendly mode, and no internet required. No FOMO timers, no energy systems — just the next satisfying box.