Meow
Love this game
Blue 81
I like this game very much!
The best game for me.
Most enjoyable and very difficult game.
81
Absolute wonderful game
Cool game
Easy.

This game blends classic tile-matching with Sudoku logic. Strategically place blocks on a 9x9 grid to clear lines and squares, aiming for a high score. Enjoy a relaxing yet challenging brain workout with a modern blue aesthetic.
1.0.1
January 22, 2020
- Performance and stability improvements. - Add vibrate responding feature. - Turn off sound setting now also effecting to interstitial ads. We glad that you enjoy playing Blue 81. We read all your reviews carefully for making Blue 81 even better for you. Please leave us some feedback to let us know why you love this game and what you’d like us to improve in it. Keep your mind always sharp with Blue 81!
MoreBlue 81: Sudoku Block Puzzle is a free mobile game that combines the mechanics of block puzzle games with Sudoku logic. Players strategically place blocks on a 9x9 grid to clear lines and squares.
You drag and drop blocks onto the 9x9 board. Clearing full horizontal or vertical lines, or 3x3 squares, removes those blocks and earns you points. The goal is to keep the board clear and achieve a high score.
Yes, Blue 81: Sudoku Block Puzzle is completely free to download and play, as indicated by its 'Free' price.
No, the application data indicates that Blue 81: Sudoku Block Puzzle does not contain advertisements.
Blue 81: Sudoku Block Puzzle is supported on iPhone, iPad, and iPod devices.
The game has an age rating of 4+, making it suitable for a wide range of players.
The latest version was released on January 22, 2020, indicating a less frequent update schedule since its initial release on January 3, 2020.
Its unique selling proposition is the fusion of classic block-matching gameplay with Sudoku-style logic, presented with a modern blue aesthetic and offering both light and dark modes.