Forge Mods for Minecraft 1.21
Browse 12 free Forge mods for Minecraft 1.21 — popular picks include Savage Ender Dragon, Ender Dragon Fight Remastered, Boss Music Mod/Datapack.
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Savage Ender Dragon
Overhauled ender dragon fight with new mechanics
Ender Dragon Fight Remastered
A difficulty increase of Minecraft's final boss, with a focus on a somewhat Vanilla feel.
Boss Music Mod/Datapack
This mod adds music that will play during epic frays against both the Wither and the Ender Dragon.
Piglin Conservatory v3.0
Adds a news structure to the Nether, The Piglin Conservatory, along with a new Obsidian Apple, Dragon Fruit, Toxic Mushrooms, Hoglins' Fossils, Corrupted Emerald and a New Music Discs!
Deadly Enderdragon
Minecraft mod to make the Ender Dragon much more aggressive and dangerous without new mechanics.
More useful Dragon Egg
Makes Dragon egg useful.

Simple Crystal PVP Disabler
This datapack adds a simple system to disable crystal pvp while ensuring to allow people to re-summon the ender dragon.
Better Peaceful
Removes hostile mobs, except for mobs, which you need to beat the ender dragon.
AntiEnderdragonRespawn
A simple datapack / mod that prevents one from being able to respawn the Ender Dragon
Craftable Uncraftable Items/Blocks (CUIB)
In this Datapack, you can craft items that are usually uncraftable. The current items/blocks are; Saplings, Mushrooms, Fungi, Dragon Head, Dragon Egg, Netherite Upgrade, Stone Ores, Deepslate Ores, Nether Ores, and a Trident, More coming soon!
Ice And Fire Dragons X Better Combat Mod (1.21.1, 1.20.1) – Master Your Dragon
Ice And Fire Dragons X Better Combat Mod makes certain fantasy weapons from the Ice and Fire mod work correctly with Better Combat. This addon is a compatibility patch that lets you use specific weapons with the improved combat mechanics without them breaking. Features: Adds compatibility so specific weapons from Ice and Fire work properly […]
Savage Ender Dragon Mod (1.21.1, 1.20.1) – Ender Dragon New Power
Savage Ender Dragon Mod makes fighting the Ender Dragon more challenging. Now, the difficulty of this battle depends on several factors, and the dragon has learned new attacks, making the fight harder but more exciting. The creator does not reveal all the new battle mechanics, but the dragon's strength and health are influenced by the […]