Played for three hours, it took over me and i thought i was a space overlord sitting there laughing my evil laugh while the stupid computer sends waves against my powerful planetary defense and planetary wall of ships. Basically there were two layers of defense and fixing drones, so when my ships were hit the drones repaired them and really i was invincible.
Edit: i waited until the enemy was out of resourceful asteroids, military power gone down and i bombed the surface with missiles and sent 20 starships to finish the job while two tech 3 class bomber cruisers bombed from space.