megamonkey2: Void Dweller trait works completely differently in 3.1. Entire mod code is obsolete and would have to be written anew from scratch. It would also introduce compatibility hell as every mod combination changing basic game traits would have to have a separate compatibility patch. Not my idea of fun. 3.1 VD are partially habitable on artificial structures so here's that.

Marrow made a new mod you can find here: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2620814955

The current version of this mod has been removed - is it no longer necessary in 3.1?