I was playing and suddendly a medium demolisher spawned right inside my base (next to my artillery shells storage), im sure this is a bug because there is no way of defend or avoid this. No warning too, just poof.

It didn't came from outside, if I load the save, the demolisher keep spawning in the same place.

Thanks for the detailed report — I understand why that felt unfair.

In this mod, demolishers are allowed to emerge suddenly.
They spawn near existing enemy influence, and in some cases they can also hatch from dropped eggs.
Because of this, their appearance is not always preceded by a visible approach from outside the base.

If the demolisher keeps appearing in the same location after loading, that is expected behavior:
the spawn point itself is deterministic and part of the save state, not a random glitch.

That said, I understand that sudden spawns inside or very close to a base can feel unavoidable.
I’m considering whether additional warnings, distance checks, or optional settings would improve the experience without removing the intended tension.

Thanks for sharing your experience — feedback like this is helpful.

(ver.0.2.2) fixed!