Minecraft Java 1.21 Mods

Browse 12 free mods for Minecraft Java 1.21 — popular picks include Terra Entity, Unknown5473lib, MythicMobs.

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12 mods

1.21.1neoforge

Terra Entity

A mod encompasses numerous Terraria monsters and bosses, and constitutes one of the submodules integrated within the larger mod, Confluence.

475kdownloads

1.21.4neoforge

Unknown5473lib

A universal code library prerequisite for mods created by Unknown5473,Provides a Boss mob template library and screen effects..

232kdownloads

1.21.4

MythicMobs

Create custom mobs and bosses with advanced skills, attributes, equipment, and more!

100kdownloads

1.21

The Mob

Mob Framework | YAML | Boss Phases | Radar HUD | AutoSpawn | Player Stats | 1.21.+

567downloads

1.21spigot

‍♂️ TheMob ✦ Advanced Custom Mobs & Bosses

Mob Framework | YAML | Boss Phases | Radar HUD | AutoSpawn | Player Stats | 1.21+

302downloads

1.21.4

EnchantedBosses [Free]

An endlessly customisable bosses plugin using SkillsLibrary

193downloads

1.21.1neoforge

ADKM

Defeat a powerful, giant boss roaming your world to claim his legendary Scythe with +16 Attack Damage! A high-risk, high-reward challenge. (Requires GeckoLib)

126downloads

1.21.11

Custom Boss Zoryth AI

Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).

109downloads

1.21.1neoforge

Vitae

Vitae is a data-driven entity framework for NeoForge 1.21.1 that lets you define custom animated mobs, bosses, and NPCs through datapacks and optional KubeJS scripting.

98downloads

1.21

NxControl

NxControl is an advanced staff plugin that lets OP players control players or mobs using simple keybinds, with GUI, bossbars, and freeze system built-in. It’s lightweight, powerful, and perfect for moderation, trolling, or cinematic gameplay.

43downloads

1.21.9

Custom Entity API

A datapack API allowing anyone to add custom entities, or bosses, to Minecraft: Java Edition, powered by Animated Java.

32downloads

1.21.1neoforge

Spell Utils Mod (1.21.1) – Library for Iron's Spells and Spellbooks Addons

Spell Utils Mod is a utility API designed to help developers create addons for Iron's Spells and Spellbooks Mod. It provides ready-to-use systems, classes, and tools that simplify the process of building custom spells, mobs, and bosses. This mod is mainly intended for mod developers, not regular players. Features: Mob & Boss Systems Custom spellcasting […]