Terraforming Mars: Prelude Expansion

In Terraforming Mars: Prelude, you get to choose from Prelude cards that jumpstart the terraforming process, or boost your corporation engine. There are also 5 new corporations, and 7 project cards that thematically fit the early stages of terraforming. This is the third expansion to Terraforming Mars, and can be combined with any other expansions or variant.