if your computer can handle it YNAEMP from Gedemon. There is a "giant" map of earth with 22 civs and 41 Cs`s. Its epic. Actually anything from Gedemon is tops.
Unlimited Barbarian XP mod gives your military units some brawn. Like double attacks, healing on the move, and better movement in rough terrain.
Gold back from rivers mod saved me from losing interest in the game.