Minecraft Vanilla Mobs too easy for you then try this challenge.
OP Mobs mod makes easy mobs like creepers, zombies and skeletons more powerful.
In this challenge:
1.Zombies spawn with full diamond armor and a axe.
2.Skeletons spawn with full diamond armor.
3.Creepers are the worst, if you kill a creeper five extra creepers spawn as reinforcements at the place of the creeper's death.
This makes an infinite amount of creepers. So, don't mess with the creeper.
More Ideas and suggestions are welcome
NOTE: THIS MOD IS ONLY FOR FORGE NOT FABRIC!
OP Monsters v1.1 has released
1. removed multiplying Creepers
2. Creepers always spawn charged.
3. Skeletons spawn with Punch II Bow
4. Added Mod Configuration for spawning customization
The infinite creepers created lag so it is removed in this update.
NOTE: This mod is for FORGE 1.12.2 not FABRIC