Merge 10

"Merge 10" is a puzzle game design to pass the time and train the brain.

The rule of this game is simple. Tap the grid in the 4x4, 5x5 or 6x6 square. If there exists adjoin grids with the same number, then they will be add up and merge to a new number which is increase 1 point.

The objective of this game is to add the grids up until 10.

Of course this is a infinite game, so even number 10 is come out, the game will still continue and you can challenge the highest score.