Custom Mobs
by xTymsonek
Custom Mobs gives vanilla mobs new variants, including creepers, skeletons, zombies, endermen, spiders and squids, with appearances that can depend on the biome.
What it does
Each vanilla mob type receives a set of added variants. Creepers gain three, skeletons and zombies five each, endermen and slimes two, and spiders, squids, withers, zombified piglins, wither skeletons, goats, frogs, magma cubes and striders one or two more. Some variants come with their own abilities, which the author describes as making play a bit more difficult, and some appear only in particular biomes.
The mod targets Forge and covers Minecraft 1.20.1 – 1.20.6, with files for 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5 and 1.20.6. Both the server and the client need it, so the variants are visible and spawn in multiplayer. Version 2.0 for 1.20.6 is the latest release, published on 2026-06-17, and the mod was first published on 2026-05-01. The code is covered by All rights reserved and is not open source.
Key features
Variants for vanilla mobs
New appearances for creepers, skeletons, zombies, endermen, spiders, squids and other vanilla mobs.
Biome-dependent looks
Some variants appear only in particular biomes, so a mob's look can change with its surroundings.
Variant abilities
Certain variants carry abilities that add challenge to encounters with them.
Broad mob coverage
Variants reach fifteen vanilla mob types, from the Overworld cave and surface mobs to the Nether and End.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Refreshing a familiar world
Players who have finished a standard survival run can meet altered versions of the mobs they already know.
Adding difficulty to encounters
Variants with abilities make some fights harder than their vanilla counterparts.
Who it’s for: Players who want more varied mobs in vanilla-style worlds on Forge, and server owners who want the variants shared by everyone on a multiplayer server.
How it compares
I dont see you! is a Forge mod for 1.20.1 that is also client and server and under All rights reserved, so it covers a single version where Custom Mobs covers 1.20.1 – 1.20.6. Better Creepers is server required with optional client use and runs on Fabric, Forge and Quilt for 1.20 – 1.20.2, focusing on creepers alone. Monsters Level Up is open source under the MIT License, runs on Forge and NeoForge for 1.19.2 – 1.20.6 and is client and server like Custom Mobs.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Custom Mobs | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-06-17 |
| I dont see you! | Forge | 1.20.1 | Client and server | 2025-03-24 |
| Better Creepers | Fabric, Forge and Quilt | 1.20 – 1.20.2 | Server required, client optional | 2023-09-21 |
| Monsters Level Up | Forge and NeoForge | 1.19.2 – 1.20.6 | Client and server | 2026-07-10 |
Questions
Does Custom Mobs need to be installed on the server?
Which game versions does Custom Mobs support?
Are the variant spawns tied to biomes?
In the catalog
Custom Mobs is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 11,154 mods support Minecraft 1.20.6.
More from xTymsonek
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What the author says
This mod adds new variations of vanilla mobs and will add to your world fresh minecraft experience. These new variations are unique and come with new appearences (sometimes appearence depends on biome) and new abilities which can make user experience better and bit more difficult. This mod includes: -3 new variants…
Official listing
- Modrinth page
- modrinth.com/mod/custom-mobs
- Owner
- xTymsonek
- Published
- 2026-05-01
- Updated on Modrinth
- 2026-06-17
- Facts verified
- 2026-10-15