by MadNomad » Thu Feb 28, 2019 8:59 pm
It will not be safe if you do not have a wall on the level above that covers all of the walled area below it, so pay attention to every tile when you design your walls for all underground levels
and you cannot farm underground so its a very bad idea to limit yourself to living underground only
living underground only allows you to hide from the world, but it doesn't prevent anyone from building a minehole above you, this is a thing you should consider before doing something like that
is that a big deal to have all levels connected to surface village? no, just design everything properly and make these mineholes and walls - the major issue is time it will take you to do that, but do you build things like that every day?