I always lose to my brother because of this. It seems like 1/5 of his tiles are citadel or forts! I can always switch to another type of victory, but we have agreed I only can pursue domination victory while he can get every type of victory. My difficulty is king and hes chieftain. Im at a disadvantage of this. His xcom squads in citadel and forts always crush my GDRs. Can someone help me to beat him in another game?