Now change at least three things about your game!

• Adjust the difficulty by changing the length of the interval, the amount of time on the timer, or the number of points earned or taken away for collecting litter.
• Try adding an image and message for the player if they run out of time.
• Try making this a two player game. Who can recycle the most litter?

To navigate the page using the TAB key, first press ESC to exit the code editor.