In one of my battles (20+ hours, not joking), I am killing everybody. I use it as my practice game. I have the Death Ray, all the wonders, etc.., I knew there were Silvermists in the Northeast quadrant of the galazy for a long time, I just let them go because not much was there for me. I sent three of my best fleets up there, all were beaten back/killed. Each fleet had a carrier, 7 destroyers, and 2 troop transports all with tons of fire power and shields. When I fought them, the Ancient Guardians helped, but they too were wiped out. I sent another three Fleets with even more updated weapons (I think each fleet easily had 5000 firepower, I can't remember). The Guardians came again, all were wiped out. I was watching the whole time, they just kept popping up. So I am unsure if anyone else has seen this, but this was sort of over the top. I am just leaving them there. I take it this is a fluke.