From the publisher: PAX Expansion: the slaves are re-arming themselves and Rome, too, does not remain idle. With the new cards; Militia, Scouts, and Adversaries, additional tactics are possible for the slaves as well as for Rome. Pergamemnon Expansion: out of the Abyss come the Germans and the Macedonians, two more powerful nations to compete with the others. In addition to the specific skills of each people, all players now have the option to acquire additional skills.