PeacefulMonsters stops the natural spawning (spawning by means of light level) of all hostile and neutral mobs. Here is the list of mobs it will stop the spawning of: Creeper Skeleton Spider Zombie Slime Ghast Zombie Pigman Cave Spider Enderman Silverfish Blaze Magma Cube Witch Endermite Guardian Although these mobs cannot spawn naturally, they can still spawn by: Spawners, Spawn Eggs, Building a Wither, Infecting/Curing Villagers, Lightning and Silverfish Blocks.
