Space Base: The Mysteries of Terra Proxima

From the publisher:

A New addition to the galaxy and A New Way to Expand Your Game!

Merging the power of Shy Plutonium with new starship technologies has allowed the U.E.S. Science Corps to reach the distant stars of Alpha Centauri, and discover the planet Terra Proxima. Strange ruins and vast fields of fungi cover much of the planet. Eager for knowledge, the U.E.S. authorizes colonization!

Welcome to the second installment of Space Base™ Saga Expansions. This is a collection of games with a linked story that introduce new content to Space Base™ via a narrative are included as well. Once the story is completed, it may be structure. Not only are new ships added, but new scenarios replayed or the contents may be added to your Space Base™ core set.

This is a expansion. You need the core game Space Base to play with it.