In this game you have to find the password to open a combination lock. There are 100 levels. Each level has some hints to follow.There are easy and difficult levels. In order to complete each level you need pattern recognition skills. As a matter of fact each level has specific mechanics. In order to understand these, it is necessary to play and study the way each combination works. Each level has a specific pattern. Moreover it has particular constraints. You need to understand and exploit them in order to find the password.