139 is a number puzzle game where you have a 5 by 5 square tiles.

RULES OF THE GAME:
The objective is to make the sum of the tiles equal to the sum displayed as the target at the bottom of the game screen.
1. The sum of the horizontal and vertical tiles should be equal to the target sum.
2. The sum of all the 2 main (BIG) diagonals and 4 cross (SMALL) diagonals should also be equal target sum.

THAT'S ALL U NEED TO KNOW! !

V1.2 Features:
☆Auto backgrounds
☆Auto sum helper
☆Difficulty selection

Screenshots: