Wow what a cool deep tower defense! Well made systems and when I found the info on the satellites I was blown away. Wish I could change or sell weapons on my planets (wanted to go all laser in the end..). Incredibly beautiful planets especially, that fact alone is why I really want to defend the main one!! Also sick musik.
If I may offer some critiques I would try to separate the main elements with the background, could be through contrast or saturation. My eyes didn't know what to focus on, it sometimes got tough to distinguish.
Thanks for a fun one!