Move the smiley face around with your mouse. The balls around it will repel! Buuuuuuut it's a bit laggy you must put your mouse on it FOREVER then it'll respond I dunno WHY If you have suggestions on how to solve this problem, please type it in the comments! ~Updates~ 11/9 I made the smiley slower so the ball effects are faster.
Google for the gif background. PixelBuild for the music. Marina Bay Sands for the inspiration...