As the title of the game implies, this game shall involve Battles between nations. The Introduction of nations allows players to come up with city or empire that is different from the others.
Upon reaching the Classical Age, players may select from seven nations available–British, Chinese, Germans, Greeks, French, Japanese, and the Romans. Quite recently though, an update adds Korea as a new nation which players may select. This update is to celebrate the release of the game in Japan, South Korea, and Taiwan.
By the time that players reach the Medieval Age, they have the option to change their nation by leading the nation into a Revolution. The first Revolution would require 600 Crowns and all of the Citizens in the town.