Thanks for replying guys you have given me insight into things i didn't think of one example being how would we see because of third person, one way to fix this would to be either give us first person or make the roofs of the structure lift away and fade into nothing for a nice seamless transition. another question was how would it be build and my answer to that is maybe something along the lines of the subnautica building system where you have a tube and then a kind of bio dome. my reasoning behind adding this into the game is mainly to provide an environment that is pressurized (or maybe depressurized) and provides safety from the sand storms and also would be a necessity on the *Spoilers SPOILERS, Red planet where there is always a sandstorm of deadly spiked balls. another thought would be that you might have to create an oxygen generator for the base that uses power to create oxygen and the airlock would use like one or two bars of power to cycle through from pressurized to de-pressurized and vice versa. if there are any question please quote the comment and leave them and i will try to think of an answer.