Tectonic

How to play

Each region of size N must contain the numbers 1 through N, each exactly once. No two cells that touch each other — including diagonally — may contain the same number, even across region boundaries. Click or tap a cell to select it, then use the number pad (or your keyboard) to fill it in. Cells that break a rule are highlighted so you can spot mistakes as you go. Fill every cell correctly to win.

About

A number logic puzzle in irregular regions. Fill every cell so no touching cells share a value.

Tectonic (also known as Suguru) belongs to the same family of logic puzzles as Sudoku, but instead of fixed 3x3 boxes, the grid is divided into irregularly shaped regions of different sizes.

Credits

More information

Platforms: Mobile Browser, Desktop Browser.

Released: 17th of July 2026.

Last Updated: 17th of July 2026.