Press the green flag to start. Click anywhere on the screen. Something cool happens if you hold down the mouse and move your cursor over the screen. (only works if you HAVE a mouse you can hold down, not one on a laptop.) IGNORE THE THING IN PARENTHESES. Try to pass your cursor over semi- slowly, not too slow, not too, fast. PRESS SPACE TO CLEAR! FULLSCREEN FOR BEST EXPERIENCE!!!
thanks to @alumnyum
