Train your brain with a simple number puzzle game! ■ Rules are easy! 1. First, check the number of the theme! 2. Trace the numbers with your finger and add them to make the number of the theme 3. Clear the stage when all the numbers are made! Let's move on to the next stage! With simple rules, everyone from children to adults can play! ■ From simple problems to difficult problems! 300 stages included, from simple things that can be done quickly to difficult problems that make your brain spin!