Press the green flag and then do nothing except watch the worms zip around the screen (and possibly breathe and blink).
This planet, for some inexplicable reason, has no gravity whatsoever, despite its large mass. Scientists speculate that this is because it isn't actually a planet; just the backdrop for a Scratch program. The red worm likes to chase the others, but will never catch them because they disintegrate and reform as soon as it touches them.