Touch the Green/Yellow energy spheres, don't let them destroy the Eggship, you lose if it gets hit. Avoid the red Antimatter mines, or block them with your shield. You move up and down with the mouse cursor, and the shield comes to your height by pressing E. Try to get as much score as possible! Green energy spheres are slower and spawn at the start, they give 1 energy. Yellow energy spheres replace Green energy spheres after 45 seconds. They are faster and harder to collect, but give 2 score. If you're hit by an Antimatter mine, you lose 3 score. If you block one with your shield, you gain 1 score.
You play as a ULTRAVIOLET-27 defence ship protecting your home eggship. You are equipped with energy absorption panels and a Antimatter-Neutralization shield. You needn't worry about the eggship being hit by mines- it has its own shield. The eggship, however, is extremely vulnerable to energy attacks. You must defend against energy spheres to protect the eggship.