Minecraft Java 1.21 Mods
Browse 13 free mods for Minecraft Java 1.21 — popular picks include Beta Days, Old School Minecraft, School Lifesteal SMP.
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Beta Days
Make your Minecraft old school with classic configurable options like disabling hunger, sprinting, experience drops, 1.9 combat system, nether fog and more.
Old School Minecraft
Brings back the old Alpha/Beta feel of Minecraft! While having the new features!
School Lifesteal SMP
Minecraft Server For Flex Academy (School)
Cool Boy Totem
totem with cool school anime boy
MC-DaClassroom
A modpack with over 300 mods originally made for DaClassroom, a private online server, designed for exploration, adventure, and multiplayer fun. Enjoy revamped structures, enhanced visuals, realistic world generation, and more!

Cobblemon Classic
A cobblemon modpack that combines the feel of both old school minecraft with old school pokemon through various changes and tweaks. Also has a offical server!
CraftiLetras
Official Modpack created mainly for all the colleagues of the “Facultad de Letras”, teachers and students. To create something great. Equally accessible to all those interested in a modpack with everything you could want in this version 1.21.1.
Ocolet909's Modpack
A mod for me and my friends, first time here. The mod contains food mods such as farmers delight, some weapon mods that add realistic rifles, 1 mod that adds simple tiers, and alot of performance mods to keep it running on school laptops.
CobbleBeta
This modpack combines Cobblemon with Minecraft Beta 1.7.3 to create a nostalgic Pokémon survival experience, featuring classic terrain generation, old-school gameplay mechanics, and a simplified modded environment.
MoonVeil
MoonVeil, an old school Minecraft RPG Modpack experience!
Sword Blocking Mod (1.21.8, 1.20.1) – Old-school PvP Vibe
Sword Blocking Mod is a client-side tweak that revives the nostalgic sword-blocking animation from Minecraft’s pre-1.9 combat era. Features: Restores sword-blocking animation when holding a shield in your offhand. Works especially well on ViaVersion servers, allowing newer clients to mimic older combat visuals. Purely cosmetic-doesn’t affect damage, durability, or combat mechanics. Recommended to pair with […]
(Un)Official LHS Server Modpack
This is the modpack from my school server so that anyone can play the mods installed
Arcane Cataclysm Unleashed Mod (1.21.11, 1.21.1) – Cast Elemental Spells
Arcane Cataclysm Unleashed Mod extends Iron's Spells 'n Spellbooks with over 50 spells, elemental grimoires, and gear tailored for tough combat encounters. It introduces the Aqua magic school to control water in battles against powerful mobs. The mod connects spellcasting mechanics with items and challenges from boss-heavy mods like Cataclysm and Born in Chaos. You […]