Simon Game

Hi everyone, I've recently created a game that is an exact copy of a game from our childhood. If you are familiar with it, then have fun.
If you are not, here are simple rules on how to play it: 

1. The game displays a light and sound effect.

2. You press the same button.

3. Next round, Simon repeats the first light and adds one more.

4. You copy the whole sequence in the right order.

5. Each round, the sequence gets longer.

6. If you press the wrong button, the game ends.