Memory Tester

Based on the old Simon Game where you had to remember colour sequences,  Simon
has 4 lights,  this has 8.

To start the game,  press "PLAY"
A Sequence of lights will illuminate,  and a sound will play for each light. 
You start off with one light,  each time you copy the sequence correctly and
press play, an extra light will be added to the sequence.

See how many you can remember in one go !

Hint:

At any time,  you can press the play button again and the current sequence will
be repeated for you.
You can even do this mid game and try to enter the sequence again.

The game ends when you make a mistake and you go back to one light again !