Is there a rule that means mobs spawn on slabs?
Can mobs spawn on slabs? says that they can't.
Unfortunately, this is happening to me:
He definitely spawned there, there is no way for him to have got there. I have seen it happen on raised half slab paths as well.
Is there a game rule that has been changed by the server admin?
Best Answer
Mobs will never spawn on slabs. That pigman did not spawn on that slab.
Mobs will spawn on most opaque blocks (in addition to upside-down slabs and stairs) as long as the rest of their spawning conditions are met. They will never spawn on the bottom half slabs. You can check out all of the spawning conditions on the Minecraft Wiki.
So what happened here? How did that pigman get there?
There are 2 possibilities:
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