Per Aspera Free — Download (v1.8.1)

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

: A free content update focused on the late-game urbanization of Mars. Per Aspera on GOG.com Per Aspera Free Download (v1.8.1)

While the base game requires a purchase, several significant expansions and updates are available at no extra cost to owners of the game: : A free DLC that adds customization options

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)