Terraforming Mars Ares ExpeditionTerraforming Mars: Ares Expedition is an engine building game in which players control interplanetary corporations with the goal of making Mars habitable (and profitable). BoardGameGeek Description: Terraforming Mars: Ares Expedition is an engine building game in which players control interplanetary corporations with the goal of making Mars habitable (and profitable). You will do this by investing mega credits (MC) into project cards that will