Build and defend your moon bases from Meteor Storms and Alien attacks!

Author Comments:

Build and defend your moon bases from Meteor Storms and Alien attacks! In this inspired by missle command style game ... Collect Crystals with Moon Bases, shoot with turrets. Spend crystals to upgrade your defences. Spend your resources wisely!
This is my second Stage3D flash game launched and what a learning curve. If you find any problems please let me know.
I had the help of a bunch of people in the credits, thanks guys!
Update 1:I've now applied a fix the game freaking out after level 5, and the recycle panels in the upgrade screen.
Update 2: I've uploaded a new major update, fixing the 'can't get past level 5' bug and a bunch of others.
Update 3: Fixed heaps of bugs, also the powers ups & particles should now work correctly, you can now complete the game properly (it was broken!)
Update 4: Fixed a bug in the upgrade screen.