Oh~, a planet-system tower defense is a nice idea for this theme! :) I also like the minimalistic, clean graphics, and this seems to be quite elaborate, in terms of features!

Gameplay-wise, this wasn't really easy to get into. I didn't really have an idea of which turrets I needed, and only one of them seemed to spray little bullets at enemies. Repairing felt ineffective, and I was quickly overwhelmed by enemies, feeling rather helpless. ^_^ I also didn't like that I had to shift the mouse back and forth between the segments and the buttons in the top right. How do you generate resources, just over time?

With more explanations, somewhat better balancing, and sound, I could see this being quite fun! :) Thanks for submitting!

"You lasted 70069 seconds!" <- Is this a bug, or is this in game-time? :-)

The idea is intriguing, but the game's very difficult. I imagine there is some strategy to win, but I'm not really getting past ~70 seconds (I'm guessing the counter at the end shows the game time in milliseconds?). Still, I like how the game looks, and the basic idea.