Move this spinning gear through the level while destroying enemies. You can either move by using the mouse or by using the W, A, S, and D keys. The mouse is a little bit easier, due to how many obstacles there are in the game. Move the mouse around to change the aim of your gear. Click and drag all over the screen to make your gear move through the level. You also use the mouse to shoot, which means you cannot move and shoot at the same time. To shoot, push the Shift key and then click. You want to make sure the arrow is pointed where you want to shoot!