Ok, thanks for your replies. Especially for writing about the stone furnaces.

For better understanding, I added my savegame.... (vanilla)

so my plan for the next hours is:
1.) Expanding and build walls between the lakes, at first to the north and west
2.) Build other walls... so without stone ...

any hints?

Hi there,

what did you modify? The settings in the upper left side say default "modified"... ? And it looks very strange, that the bar for your enemy-bases (frequency and size) are black/grey....

I do not know, if it is possible to change the enemy generation after starting the game...

Hi there,

I played on default settings before and now started to play in a death world on default settings since space age release.

A few questions to the community:

1.
Should I defend or attack? Or both?
I started to defend only, but biter attacks became worse. Then I attacked biter nests around ...