Shape Mars's destiny from the very beginning with Terraforming Mars: Prelude. This expansion lets you craft your corporation's founding vision through strategic Prelude cards that accelerate terraforming efforts or supercharge your engine from turn one. Discover five innovative new corporations and seven thematic project cards designed specifically for the critical early stages of planetary colonization. Every choice you make in these opening moments ripples through your entire campaign, giving you unprecedented control over your path to victory. Seamlessly integrates with any Terraforming Mars expansion, letting you build the ultimate Mars-building experience. Requires Terraforming Mars base game.