Rotate the (larger) circle by pressing the mouse, either above the circle to go clockwise, or below the circle to rotate it counterclockwise. If the approaching circle hits its own color, you get a point - if not, your score is reset to zero.
Thank you whoever suggested this to be featured! I'm kind of surprised because it's such a simple game, but whatever ;) Music is Vladimir Horowitz playing Liszt's Hungarian Rhapsody #2. @ScratchStang implemented the smoother spin in 'Colorblind Interim' and I used her method here instead of the animation method (changed 12/30/17)