Use your left mouse click to remove shapes. But be careful! Don't let the Redstar fall down from the platform! Use "Spacebar" or "R" keys to restart level.
Make clever use of physic to collect all flags in each level. Use the mouse to draw an object. Hold [S] and click inside an object to draw a pin. Draw a second object on top of the pin to link the two object together. Hold [D] to draw a hinge. It works the same as with a pin, except that now the two objects can rotate with respect to each other. To erase a single object hold down [A] as you left click a shape. Hold [W] and left click to gently push the red shape in a certain direction.
Your aim is to collect 200 stars in a single round. Upgrade, collect, then upgrade again! Buy and place planets for your rockets to bounce off from, kinda like a giant pinball machine in space.