Concordia: Venus (expansion)
Concordia Venus includes new personality cards with the goddess Venus allowing for new strategies, two maps (Hellas/Ionium) on which to play (using components from the Concordia base game in addition to new cards), and rules that enable teams of two players to play against one another.
This is the Concordia Venus expansion; there is also a standalone version of Concordia Venus. The standalone version includes more maps (Imperium/Cyprus in addition to Hellas/Ionium) than this expansion does (because the base game already includes Imperium, and Cyprus is available as part of Concordia: Balearica / Cyprus).