Blocking and Allowing Mobs

Controlling Which Mobs Can Spawn

Bad Mobs gives you a single list to decide which creatures are allowed to exist in your world. Anything you block is stopped from appearing through natural spawning, from spawners, or from being created by players. The mod removes a blocked entity the moment it tries to join the world, so it never appears on your screen.

Because the system automatically detects creatures added by other installed content packs, the same list covers modded mobs as well as vanilla ones. You do not need to configure each source separately; blocking a creature covers every way it could enter the world.

A common use is banning destructive monsters such as creepers while leaving the rest of the game untouched. The mod runs entirely on the server side, so on a multiplayer world the server admin controls what spawns for everyone. Changes apply immediately, with no restart needed.