How Do You Level Up in Age of Empires 3?

Easy Leveling in Single Player Open the sp_yourcityname_homecity. xml file in the My Documents\\My Games\\Age of Empires 3\\Savegame (dont forget to make a back up first) folder, search for . You will see something like this xx , put in 99 for the xx, save the file, go into the game and play a skirmish.