Ho. Lee. Crap.
I was right to save this one for last. This is incredibly impressive! I have no complaints, but I'm not sure what to compliment either. I suppose, since I also made a black hole shader, congrats on making such a beautiful one yourself. You should upload it to Shadertoy.
On the other hand, strategy games are way beyond me. After trying it I realize the strategy in my game pales in comparison and I should really just change the genre to 'casual'! 😉 But seriously I have no idea what I should be doing in this game, so I'll let others critique the difficulty.