Find in the matrix the suitable number to complete the sum. In each stage, you have to find ten numbers (except in difficulty level "beginner", where you just have to find seven numbers) before time gets to zero. As you progress in the game, the size of the matrix and the number of sums increases.

Features:

- Four difficulty levels.
- Power-ups to help you in complicated situations. Use the rubber to delete a fraction of the wrong answers. Use the bomb to see the correct answer right away.
- You can increase the amount of power-ups with in-app purchases.
- At the end of the stage, you can get from one to three stars, depending on the score you got.
- Connect with your Google+ account, to get achievements and access to leaderboards.
- Achievements are a fun way to compare your progress with your friends.
- Share and compare your score with your friends or the world on the leaderboards.