40 Sum - Addition Sudoku [Android]

Do you love logic and number puzzles? Play a lot of puzzle games like Sudoku, Kakuro or Bridge Puzzle? Now there's a new puzzle game in town - We present to you 40 Sum, the addition Sudoku!

40 Sum combines Sudoku gameplay with simple math addition. The rules are simple: fill the all empty spaces in a 7x7 grid with numbers between 1-9. Each row/column can't have duplicate numbers, and each row/column must sum up to 40. Each level is hand-crafted, and take less then 5 minutes to solve, perfect for casual play: during your daily commute or during lunch break, or just any time and anywhere you want! Also, 40 Sum is also good to practice your math skill - some says that playing 40 Sum helped them improve their arithmetic score (though we're not really sure of that :D)

FEATURES
- 3 simple rules: a combination of Sudoku and simple sum operation, fans of similar games will be playing in no time
- Simple but beautiful minimalist design, with smooth and fun animation
- dozens of levels, updated each month!

More features coming soon to 40 Sum, like cloud save, more difficulty levels and additional game mode, so stay tuned for more updates!

NOTE:
Location service is used by analitycs only, you DON'T have to turn on location service to play the game.