CurseForge · Minecraft mod
Slayer's Beasts
Explore new structures and biomes to face off against beasts and bosses on the surface, or in treacherous dungeons.
Quick answer
Which Slayer's Beasts release should I use?
Slayer's Beasts 1.21.4-6.3.1 [NeoForge] targets 1.21.4 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is Slayer's Beasts required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Slayer's Beasts 1.21.4-6.3.1 [NeoForge] need?
Slayer's Beasts 1.21.4-6.3.1 [NeoForge]. Change the file and its required mods may change too.
Install Cloth Config API (Fabric/Forge/NeoForge), TerraBlender (NeoForge), Scabbard first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Slayer's Beasts without breaking your instance.
Built for Slayer's Beasts 1.21.4-6.3.1 [NeoForge]. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Slayer's Beasts 1.21.4-6.3.1 [NeoForge]. It targets 1.21.4 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Cloth Config API (Fabric/Forge/NeoForge), TerraBlender (NeoForge), Scabbard first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Slayer's Beasts 1.21.4-6.3.1 [NeoForge]. It opens that exact file at the source.
About this project
What does Slayer's Beasts add?

Slayer's Beasts adds a variety of real & fantasy mobs to the modded minecraft experience as well as over 20 new biomes to explore (with more yet to come). This mod aims to add a degree of challenge to the game with some harder mobs & bosses, while attempting to integrate these features seamlessly with the vanilla game. When this mod has reached a more complete stage I may migrate worldgen features to a separate mod.
Existing Features
- Ant colonies (WIP)
- Praying mantis
- Wither spider
- Ambient damselflies
- Ents & Wudu (Oak, Birch & Jungle - more to come)
- 2x2 Mighty Mushrooms
- White/Black mushrooms (+ huge & mighty versions)
- Wood types: Aspen, Redwood, Willow, Eucalyptus, Desert Oak, Kapok, Bloodwood, Cypress
- Icicles
- Mud pits
- Crypt pocket dimension (spawns a dungeon which is deleted on exit)
- Biomes including: Outback, Aspen Forest, Redwood Grove, Brushland, Ice Caves, Volcanic Peaks, Fungal Depths, Bayou
Future features
- More ambient mobs - snails, butterflies, cicadas
- Illager variants (e.g. necromancer, artificer, charger)
- Various bosses
- More tree types
- More Overworld, Nether & End biomes (e.g. scorched forest, burning marshes)
Dependencies
Required
Optional
Compatibility
There is an addon mod for all the Dynamic Trees lovers which brings the growth functionality to the custom trees of Slayer's Beasts (Forge 1.20.1 & NeoForge 1.21.1).
These are the biome mods which have been confirmed to be compatible with Slayer's Beasts (As of the latest version), but this mod should be compatible with all other TerraBlender biome mods.
- Biomes O' Plenty
- Oh The Biomes You'll Go
- Terralith
- Nature's Spirit
- Wyther's Expanded Ecosphere
- Terrestria
- Regions Unexplored
The biome region weights can be adjusted using the config which can be changed in the config folder or via ModMenu (Fabric only).
The project is actively updated with new features and bug fixes. Please report any bugs or idea suggestions to the issue tracker.
Only gameplay changes are shown on the Modrinth/CurseForge changelog - full changes are available on GitHub.
Project description from CurseForge.
Pick your setup
Slayer's Beasts by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.4
3 loader builds1.21.1
3 loader builds1.20.6
2 loader builds1.20.4
3 loader builds1.20.2
2 loader builds1.20.1
2 loader builds1.19.4
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Slayer's Beasts versions and loaders
Slayer's Beasts 1.21.4-6.3.1 [NeoForge]
slayersbeasts-neoforge-1.21.4-6.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.4-6.3.1 [Forge]
slayersbeasts-forge-1.21.4-6.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.4-6.3.1 [Fabric]
slayersbeasts-fabric-1.21.4-6.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.1 [NeoForge]
slayersbeasts-neoforge-1.21.1-5.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.1 [Forge]
slayersbeasts-forge-1.21.1-5.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.1 [Fabric]
slayersbeasts-fabric-1.21.1-5.3.1.jar
26 Jul 2026
Slayer's Beasts 1.21.4-6.3.0 [NeoForge]
slayersbeasts-neoforge-1.21.4-6.3.0.jar
26 Jul 2026
Slayer's Beasts 1.21.4-6.3.0 [Forge]
slayersbeasts-forge-1.21.4-6.3.0.jar
26 Jul 2026
Slayer's Beasts 1.21.4-6.3.0 [Fabric]
slayersbeasts-fabric-1.21.4-6.3.0.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.0 [NeoForge]
slayersbeasts-neoforge-1.21.1-5.3.0.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.0 [Forge]
slayersbeasts-forge-1.21.1-5.3.0.jar
26 Jul 2026
Slayer's Beasts 1.21.1-5.3.0 [Fabric]
slayersbeasts-fabric-1.21.1-5.3.0.jar
26 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.