Tower sacrifice is probably the best upgrade there is. Place your upgraded super money properly, and upgrade to the temple and all of your towers become one. It reduces most of the lag as well since it takes all the towers in it's area.
Having a difficult time finding gases on gas planets. Vespene is fine but Amaranthine seems to be impossible. Would love if someone told me an easier way to get some.
Great game. Actually wanted to get all the achievements for it, and managed to do so without cheating. Cheats weren't really needed, and I had no idea they existed until I was most of the way through the game.
Only complaint is how the level finishes before the ejected pigs from the planes die. Can't express how many times I've lost a star because of it, but it helps getting those stray stars so much I don't want to turn it off.
WTF IS WITH THE 100 SEND UNITS FOR THE ENEMY!!!!!!! I CANT TO CRAP ALL AFTER IM ABOUT TO KILL HIM, I LOST CUZ OF IT!!!!!!!!!!!! LAST **** *** LEVEL TOO