A pink ball, called a purple ball in Chip's Challenge 2, usually abbreviated to ball, is a monster in Chip's Challenge which moves in a straight line. When any obstacle blocks it from continuing on this path, the ball immediately bounces backwards and continues to move in that direction. If both directions are blocked, the ball will stop moving until something is opened. It will die if it hits a destructive obstacle (water, fire, or a bomb), and ice and force floors will send the ball in their direction. Note that ice and force floors are the only way that balls can change polarity.