Your mission is to ignite a chain reaction that will consume the assigned number of targets for that level of play. It is very simple in concept and the first few levels are elementary. But, as you work your way toward the 12th and final level, it gets tougher. Taking out 55 of 60 targets is not easy. It’s all about the right balance of movement and spacing. Music can be disabled on the intro screen by clicking the speaker icon lower right.