Save this city from the imps by shooting them down, doing it over 100 levels, through which you will be able to earn and unlock up to 55 upgrades, and we hope that you will be able to also uncover the hidden relics. Shoot the imps from the controller in the middle, using the mouse to aim and shoot, having to target groups of at least two identical imps, of the same color, hitting them with a third to destroy them.