Allow saving in Defense mode!

I would really appreciate being able to import a bored 1000-day survivor from the mainline game and subject him to ever-increasing swarms of enemies in a mansion, hospital or mall.

Seriously, add a mall into the list of possible locations.
Could also define a few “boss” enemies that don’t make sense in the normal game but would be cool to have in late-game defense mode. Giant armored robots, otherworldly behemoths, zombie titans…

Oh, and does the generator heal its damage eventually?

saving in defence screw up gameplay

enemies stop to swarm at your character

while in latest experimental this is dissabled you can still save if you have autosave on just close your game