Shoot your way through 12 Zodiac stages.
Use you rock launcher to connect 3 or more coloured meteoroids as they fly past and into the black hole.
Play through the 12 zodiac stages, ranging from Aries through to Virgo, and stop the meteors from getting through.
Each constellation stage is broken up into ever-increasing levels that get progressively more difficult as you clear out the meteors, increasing in speed and amount. Try to get as many points as possible before the meteors get away.