Per Aspera Free | Download (v1.8.1)

: A free DLC that adds customization options for your Martian structures.

You can purchase the official version of the game from these authorized digital storefronts: : Available for purchase at Steam . Per Aspera Free Download (v1.8.1)

: A free content update focused on the late-game urbanization of Mars. Per Aspera on GOG.com : A free DLC that adds customization options