Periodic Game will help you learn all the elements in a smart, fun and entertaining way.
The game has several levels ranging from basic to extreme, with challenges requiring more speed and knowledge.
You choose one of five levels: basic, intermediate, advanced, fast and extreme, and there you have several games to choose from. The basic level is really easy, you have no time limit and you don't have any error penalty, but you can have a better score if you make it faster. From the intermediate level on, you have a limited time for each element to be located in its place, if you misplaced it, it will explode, if the element's time is over; it will explode.
