: It requires roughly 300 MB of space and runs on Windows 7 or newer. 2. Surviving Mars: Below and Beyond (DLC)
: Features expert insights on using Martian lava tubes as natural radiation shields for future human habitats. Mars Underground
: You play through the same day repeatedly, with your progress and knowledge carrying over to unlock new dialogue and paths. : It requires roughly 300 MB of space
If you are looking for the "Underground" feature in the strategy game , it refers to the Below and Beyond DLC . Mars Underground
: Allows you to expand your colony into Martian caves and lava tubes.