The rules are very simple and intuitive for everyone; So You just drag' n' drop the numbers in to the match boxes! There are two levels of difficult! in the first 20 levels you've just 4 number to match with 4 boxes after you will have 5 numbers to match with 5 boxes. The game is suitable for everyone that can play without stress... cause is just a kid’s math game in Christmas theme! So Enjoy this great game and Merry Christmas and happy new year!