Terraforming Mars Prelude Uitbreiding Engstrong> In Terraforming Mars: Prelude you choose a number of prelude cards that ensure that you get off to a flying start in the game. In addition, there are 5 new cooperatives and 7 new project cards that perfectly match the first steps of terraforming a planet. The Prelude expansion gives you a head start in the game. This means that a game of Terraforming Mars takes a little less time and you have more time for it during your games night! To play