Effects of Difficulty“Prince” is the middle level. On that level neither you nor your AI opponents get any particu-
lar bonuses. On levels below Prince you get bonuses in happiness and maintenance costs,
and you get better results from Ancient Ruins. Barbarians are less aggressive and less smart
on lower levels, as well.
On levels higher than Prince, the AIs receive increasing bonuses in city growth, production,
and technology. They may also get additional starting units and free techs to boot.