It's agreed that maintenance is much more crippling to a player's empire than corruption was in Civ 3, but I want to know why it was made that way. Is it because the map is a lot smaller than civ 3's, so an early conquest of another civ was made less viable for gameplay concerns. In Civ 3 when I destroy the first civ I meet, I don't feel like I have the game in the bag yet. But in Civ 4 most of the time you kill that first civ it feels pretty easy to snowball, I'm more confident that I'll be able to win the game. Otherwise was it made a more defiant mechanic to really entrench the idea that trying to play Civ 4 like Civ 3 will rapidly lose the game for the player.