Minecraft Java 1.21 Mods
Browse 36 free mods for Minecraft Java 1.21 — popular picks include Summoning Rituals, Idwtialsimmoedm, GTBC's SpellLib/API.
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Summoning Rituals
Create custom summoning rituals for items, mobs and commands.
Idwtialsimmoedm
I didn't want to install a library so I made my own Enchantment Descriptions mod
GTBC's SpellLib/API
A library mod and common code storage for all of my mods containing helpful tools to make my life easier with ISS add-on making!
More RPG Library
Library with status effects, entity attributes & Spell engine API additions.
Dynamic RPG Resource Bars
Animated, adjustable RPG resource bars!
Enchant Limiter (RPG Tweaks)
Limit the number of enchantments on an item.
RPGMana (Mana for Spell Engine)
Bringing Mana to the Spell Engine mods!
Critical Strike
🍀 Chance based critical hits for melee and ranged attacks!
Spells & Shields
Vanilla+ style magic extension that adds mana and spell trees. Fully data driven.
Spell Engine Extension (RPG Series Tweaks)
Extends the mod 'Spell Engine' with additional functionality.
Familiar Friends
Adds a book that can unlock special pets that grant new abilities
PlayerProgress
PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.
Veil Origins
When the Veil falls though the true origins of the ones you thought where friends...
Rage Mod
Add "Rage" to entities. Get damage bonus on full rage.
SLM: Elements
Add an advanced elemental and elemental damage system, with direct, inverse, and static interactions and more!
Keystone Expansion Pufferfish's Skills
MMO-style skill tree expansion for Puffish Skills, adding new progression categories like Combat, Mining, Exploration, Farming, Crafting, Building, Magic and Taming.
Epic Fight x Iron's Spells: Enhanced Animations community port
Compatibility for Epic Fight and Iron's Spells 'n Spellbooks for the neoforge modloader on 1.21.1
Feywild: Library
The Loremaster in his Library will give guide books you can borrow.
Some Basic Skills
A simple UI made for my skill trees.
RPG Skill Trees 2
A collection of 4 (for now) skill trees based on RPG archetypes.

PowerChord
A component-driven RPG instrument system - you know, hunting-horn-likes!
One punch Man (Anime)
Experience the power of One Punch Man in Minecraft! This Fabric mod adds insane strength, abilities, and anime-inspired gameplay. Fabric API required.
Sympathetic Attributes
RPG Attributes library mod that adds custom attributes that enhance gameplay. Designed mainly for rpg, advanture modpacks. It is the core mode/depency for upcoming mods.
Simply Enchantments
This mod adds allot of new and exciting enchantments in the game!
Every API
As you read the name this modpack adds all the API's that are present in the Minecraft API library. You can now download any mod without worrying about the API's that you will need to find manually, just download this modpack and you're all set.
The Crafting Collective
an RPG magic and mechanical style modpack meant for exploration and player empowerment.
Visually Optimized
A collage of vibrant cultures, seasons with the serenity mod, optimisations with sodium and libraries along with inbuilt library to search between and surf through Modrinth from inside Minecraft. Now with a little tweaks in name and other stuff.
Aetheria: Age of Oblivion
This is a Dark Fantasy RPG-style compilation with an emphasis on complex combat, exploration of dangerous dungeons, and magic.
Buckshot's RPG Combat Attributes
Welcome to a complete surgical rewrite of Minecraft's combat, physics, and magic mathematics.
Epic Fight Avalon Mod (1.21.1, 1.20.1) – Unlock Custom Combat Animations
Epic Fight Avalon Mod expands the Epic Fight mod with a shared library of code. It holds common animation files together so other addons do not need to repeat the same work. This addon brings a fresh way to load frame-by-frame attack animations. It also packs in special tools to check for damage on multiple […]
GTBC's Spell Lib Mod (1.21.1, 1.20.1) – Centralized Spell Library
GTBC's Spell Lib Mod is a developer-focused library mod designed to streamline the creation of add-ons for Iron’s Spellbooks (ISS). Features: Provides a shared library to simplify the development of Iron’s Spellbooks add-ons. Eliminates the need to manually copy common ISS elements across different add-ons. Designed for mod developers to streamline spell and magic-related content […]
BjornLib Mod (1.21.1, 1.20.1) – Core Library For Mob And Effects
BjornLib Mod is a core library mod by FuriusMaximus, providing shared functionality for several of their mods, such as Dragon Mounts: More Dragons. It includes useful utilities and systems designed to streamline gameplay enhancements. Features: Ability Registry and custom ability events Particle Builder with magic-style glowing effects Lightning Builder for custom lightning visuals Leveling Builder […]
More RPG Library Mod (1.21.1, 1.20.1) – Library for the More RPG Classes
More RPG Library Mod is a library add-on for the Spell Engine Mod that expands its functionality with new content and Features. Features: On its own this Mod does not add spells, you need to install the class mods you want to add spells to your game This mod is used mainly as a library […]
Naruto X Boruto
A passion project to create the ultimate Naruto mod!
DND-style RPG Stats
Simple interface for point redemption to increase stats. Needs to run with iron's spellsbooks as it contains attributes that will be upgraded in the interface.
Insane Lib Mod (1.21.1, 1.20.1) – API for Classes Mods
InsaneLib Mod is a crucial library that contains the groundwork for an RPG-ish Mod. While InsaneLib doesn't tackle the main issue of creating the system itself, many-particle effects that a "Wizard" sub-class can put out are designed within InsaneLib. Without this Library, it will probably be impossible for players to visually the prowess of a […]