Terraforming Mars: Hellas & Elysium, the first expansion for Terraforming Mars, consists of a double-sided game board presenting two new areas of Mars:  Elysium and Hellas.

Each of these maps consists of new sets of milestones and awards with relevance for that particular map. Place three tiles around the south pole to be a Polar Explorer, for example, or race to have the most estates beside water on Elysium!