Dont listen to some people on here I have rode this trail for 15 years and its great! You can only paint the white segments of the ring. Your aim is to make the ball drop through the gaps.

Well, except this guy I used to write for. December 15, at 4:

As you play, you can unlock two additional towers, as well as a number of upgrades for each type of tower. July 19, at 5: If one character dies, the other will lose the game as well, so be very careful where you step.