Brain Ball: Big Data

By selecting the type of math problems from the main menu and choosing hardness, start playing. By going up levels, problems going to harder for example number of question mark balls or number of columns will increase as shown in photos.

Résumé

Very funny math game for improving your brain & memory, play & enjoy free.
By selecting the type of math problems from the main menu and choosing hardness, start playing. Math problems never repeated and will change every time. Intelligent persons can gain higher level, use your brain and improve your level to showing your talent to others. By playing Brain Ball improve yourself instead of playing and waste your time.