Your mission, should you decide to accept it, is to position the balls above the line so that they'll collide with their opposite polarity and explode. When they do, you win the level and move on to the next, more challenging one. Can you make opposites collide? How many of the 25 levels can you win your way through? With the winning combination of cunning, skill, knowledge and patience, you'll have some crazy fun playing Collider!