Space is vast, its ever-increasing breadth mindboggling. You never realized just how vast it could be until you and your kind set out among the stars to terraform new worlds and bring life to desolate worlds. You found the perfect system to create and evolve, but just beyond its reaches lies a Great Expanse, with mysteries and riches untold. An expansion for Exoplanets, The Great Expanse brings the wonders and mystery of Gravity, strange Stars, and Deep Space, with 16 new Space Tiles and even bits to add a fifth explorer to your games of space exploration.