I've only seen one person in this thread (Talcove), as far as I can tell, who has brought up multiplayer. 1UPT really shines in player vs player wars, and I've seen lots of great saves and manoeuvres that never happened for me in the the past MUPT games, where it generally seemed to just boil down to the biggest stack rolling over or chasing off any smaller stacks. So, given that I love multiplayer, I side with 1UPT. Of course, all the AI civs in multiplayer games are just fodder that preoccupies the players to stave off the great bloodletting that the endgame turns into. Edit: SMAC was were I jumped on the civ wagon.