During game play press ENTER and type the following codes:

100,000 gold - bskinti
Increas structure damage - bsdestroyer
Remove fog of war - bsnofog
No money mode - bsrai
AI off for all kingdoms - bsnoai
AI on for all kingdoms, including yours - bsai
Change sides to selected nation - bsswitch
Enemy spies are shown on Knightbar - showspies