A free program for Android, by Staple Games.

This free Android app is a fun and addicting game to test your brain! Try to clear sections back-to-back for massive combo points. While you play, get excited by the new daily challenge and look forward to earning a new achievement. Track your scores and stay on top of the leaderboard as you beat them all. Block Puzzle is similar to a sudoku-style game with one big difference. Instead of filling in numbers, you fill in blocks! The goal is simple: Place all the blocks into the 9×9 grid and complete horizontal and vertical lines. When all of them are eliminated, you win!