I'm sure I'm not the only one who watched Fallout and had to do a Vault-style playthrough.
I started as a solo Mechanitor in a fully toxic biome to simulate the irradiated world of Fallout. I had a few self-imposed rules:
- No cleaning up toxic waste outside of the vault itself
- No genetically modifying colonists to be tox-immune
- No using 100% toxic resistance gear
This ensured that my colonists had to spend the vast majority of their time in the vault. I did have a few mishaps here and there with a few colonists getting dementia at early ages, but once I acquired the Megatardi you see in the top-right room wastepacks became trivial to manage.
I also tried to ensure my colonists could be good American citizens. No Royalty, no recreational drugs, plenty of tea (really should have been coffee), and no risky genetic alteration (i.e. nothing like Kill Thirst). All of my power came from the soybean farm so the Vault is self-sufficient.
None of the vanilla endings suited the Vault dwellers well since they didn't want to leave their Vault, let alone their planet. Instead they destroyed the Empire so that they could live in peace.
Geological Landforms populates the world map with interesting tiles like this one. I used Map Preview to find an appropriate tile. If I were to do it again I'd use Prepare Landing as well.