I've had wins in GS in all the categories apart from Score, playing at king level. I found the religious and domination victories particularly enjoyable as I don't usually play that way. I've chosen different civs each time, some old, some new, which has kept up my interest. Overall though I'm finding king level just a bit too easy now; there's never any real chance of anyone catching me after the first couple of eras. I've tried emperor a few times but find the AI bonuses too strong for me. I tend to give up without finishing, which could be part of the problem. But I don't feel as if I am closing the gap on the leading civs in any game. Are there special techniques required for the move from king to emperor? If it means having to play in too gamey a way I don't think I'll bother.