Packs typically add a new civilization with its leader and civ-specific ability, at least one unique unit or improvement, one or more scenarios or a wonder tied to the civ, and sometimes new maps or gameplay rules associated with that civilization.
The base game descriptions list 24 leaders.
Many product bullets list the game as single-player only, while fuller product descriptions also note local cooperative and competitive multiplayer for up to four players via wireless LAN.
Product details list compatibility with both the portable variant and the home-console variant of the same console family.
