Simple to play game: Brainstorm v. 1.2

This is a game and a maths puzzle, and something that you can easily download and play.
A little funny puzzle game where your goal is to find all the turtles
hidden behind the cells, exploring digits.
You play against an opponent (human or computer bot).
It's not just a math puzzle, this game has an RPG elements, such as:
Experience, Level, Skills and Skill Power.
It's not like minesweeper, it's much more difficult.