Unfortunately I didn't have time to hook up all the elements, but got enough working to technically call it a game.

What was planned that didn't make the cut:
-Vents from the planet core that could be used to create volcanoes.
-Different kinds of enemies
-Clouds could produce rain as well as lightning
-Asteroids actually kill stuff and replenish over time
-Zodiac signs act as power ups, depending on orientation

Other half formed ideas:
-Slide the moon around within it's half to change phase?
-Moon and sun position relative to zodiac has some effect?
-Each petal of the flower represents a hit, let the sun and/or rain "heal" it?