I think there is an abuse in the game. And that is the use of Rogue armies, 7 Rogues and one other valid unit. There is no defense that I have found that can be made to defend a home city against these armies. The defending army will attack the Rogues first and has to kill these units twice because they transform into the other unit when killed. The rogue now has all the stats of the other unit and then counter attacks with its new attack value. The defending units now have to kill the rogue with its new defense value a second time. This generally does not happen as the attack defense of the other unit tends to be high so the attacking army defeats the your defending army EVERY SINGLE TIME in my experience. There needs to be something that can be done to defend against the Rogue army, either a counter-rogue unit or maybe a way to change how your defending army defends such has saying 'Attack Rogues Last". I have lost a lot of interest in the game because high ranking players in my current neighborhood like to attack probably every other member of the neighborhood with these Rogue armies for no other reason then that they can, IMHO.