【Description】 Number Memorization Game

This is a game to memorize numbers.
The rules are simple.
1. When you press "Start", numbers from 1 to 9 (or up to 12) will be displayed, so memorize them.
2. You can adjust the number display time from 1 second to 10 seconds.
3. You press in order 1->2->3->4->5->6->7->8->9 (->10->11->12).
4. It will be achieved if you can press all 9 (or 12).

It looks easy, but it is quite difficult.
Please try it!