Me and a friend (both avid deity SP players) have been playing a standard size, standard pace, large island map on immortal, essentially against each other with other civs and city states. We allow interaction with other civs and city states. He plays Japan, and a tradition opener usually with 3 cities before hacking down an AI. Knowing that I would (b/c I have) destroy him with Babylon, Korea, Venice, and Egypt I am not allowed to play these civilizations. I was wondering if anyone has any civs and strategies incorporating these game settings to destroy Japan? On a note he usually only goes after the AI with his samurai until he has zero fighters and then comes after me.