Question about oerkki and zombie spawning

[mase]

Hi!
I have a question about the spawning of zombies and oerkkies. I have built my house with
default stone blocks. I have a door and windows. I also have a cellar downstairs in the
underground. The walls are fully stone. However zombies and oerkkies spawn there.
I cannot understand this. Isn't that handled as a part of the house?
I am playing minetest-tng.

[firefox]

Hi!
I have a question about the spawning of zombies and oerkkies. I have built my house with
default stone blocks. I have a door and windows. I also have a cellar downstairs in the
underground. The walls are fully stone. However zombies and oerkkies spawn there.
I cannot understand this. Isn't that handled as a part of the house?
I am playing minetest-tng.

mobs spawn near specific nodes at specific heights and light levels.
i don't know which mobs mod you use, but usally monsters spawn in the dark.
so, lighting it up should help.
another option is to use only artificial blocks like stone bricks or the new smooth stone block.

[Andrey01]

Because oerkkis and zombies spawn on stone blocks in dark places (if you use Creatures Mob Engine).