How's This Game Played?

The game is started by clicking the number "1".

The other numbers will now disappear and be replaced by black squares. Now click the squares in their former, numbered order.

If you click on the wrong square the screen will blink red and you have lost. The square will disappear when the right one is clicked, when there are no more squares you have won and the game is over.

Adjust the number of squares in the box above the game. How many can you remember without making a mistake?