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.

* Construct 6 different types of towers, each with several upgrade options

* Choose your upgrades carefully - they get more expensive as you add them

* Not a single character of text!  Not even on the title screen!

* Spend vast amounts of Moonbucks to buy 6 research options to improve your team as a whole

* It's free, and it's fun