if you find yourself having trouble with fighter stars, just make a bunch of navals, and set each to attack a different star, they end up overwhelmed and you win.
Found a glitch, most of the enemies on a stage moved up instead of toward the base, huge caravan of green dots traveling up across the screen from the minimap.
In my opinion the fundamental flaw of this game is that multiplying is pointless, your offspring will immediately be eaten and they offer no offensive advantage.