In these last years, the world of the smartphones and the one of the videogames have merged, producing a new phenomenon, called Mobile Gaming. The global turnover, related to the mobile games, grew up, becoming one of the most productive activities of the last years, so much that, in the last months, were released smartphones optimized for mobile gaming.In this context, The Mak07 game was developed. It is a puzzle game based on the simple idea of combining together seven numbers, exploiting the arithmetic operations, sum, subtraction, multiplication and division, in order to obtain zero as final result. A group of seven numbers is called schema, and each time a schema is solved, a new one appear on the screen.