Okay but seriously though can there be bunkers we can build so if we get mirv’d or have our cities nuked our pop can be there instead.
Basically they dont act like cities, instead of raising the pop limit or increasing its growth they act as a sort of a checkpoint for pop instead of our pop just completely dying (best i could describe)
So lets say you have 100,000 population, 1 cities and 2 bunkers.
If your city gets bombed instead of going down to like 80,000 population you stay at 100,000 since each bunker saves 10k people in the event the max population limit become shorter than the population you currently have.
Theyre expensive but immune to bombs.