Moon Invaders

This was developed for a Ludum Dare "warm up" contest, where we had only 24 hours to create our game rather than 48. I liked it so much I added many enhancements in the following week, and here it is!

The contest had 2 themes, 'moon' and 'anti-text'. So this game takes place on the moon, and contains no text whatsoever. Not even numbers! It's in the classic Tower Defense vein, but with a distinct Space Invaders twist to it.