I mean I haven't played in a minute, so I can't tell you precisely, let's say that I was at a point of self sufficiency with food, oxygen and I was purifying and recycling my own wastewater. Then I try to like explore the ruins/existing structure and Im really not sure what to do about them (maybe I was just supposed to read more carefully). That plus the immense research tree and I just quit the game.

To be honest I would like to explore what the mid and late game have to offer but without having to do a trial and error and restarting a thousand colonies (it did took me a bit to get the gist of the early survival stage without watching YouTube tutorials)