Try the most addictive Sudoku alternative among the logic puzzles for free with PuzzleLife's Tectonic app for mobile and tablet! Enjoy this unique and addictive number puzzle experience - both fun and challenging! The Tectonic puzzle is the ideal puzzle game for those who like to explore logic puzzles. With in fact only one rule: adjacent boxes may never contain the same numbers. With tectonic you have found a fun alternative to sudoku.The principle is simple, solving it is a fun challenge! G