ArcaneTweaks
T.O Magic 'n Extras - Iron's Spells Addon
Adds high-quality & immersive spells, boss, weapons, equipment, and MORE! Integrated with L_Ender's Cataclysm, Alex's Caves etc.
Iron's Spells 'n Spellbooks
A magic mod bringing back the classic RPG spellcasting fantasy.
Doomlike Dungeons
Causes procedurally generated dungeons rembling Doom levels to be placed in worlds
BetterEnd Forge
An unofficially maintained continuation of BetterEnd for Forge 1.20.1, bringing the latest BetterEnd content to Forge alongside bug fixes, compatibility improvements, and expanded End world generation
Goety - The Dark Arts
Perform necromancy and dark rituals using the power of souls. Highly configurable.
Reskillable Reimagined
RPG Leveling Mod, 8 default skills with up to 8 custom skills configurable!
Majrusz's Progressive Difficulty
Mod that progressively increases the game difficulty over time.
L_Ender 's Cataclysm
Discover mythical structures across your world and through dimensions, harboring challenging enemies, end-game bosses, and powerful gear.
Nameless Trinkets
Add powerful trinkets, which you will find when exploring the world.