Minecraft Java 1.21 Mods
Browse 86 free mods for Minecraft Java 1.21 — popular picks include Redstone Pen, [SUC]Surival Useful Circuit生电全家桶, SecretRooms-Unofficial.
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Redstone Pen
Adds a pen to draw Redstone selectively and optimized, as well as signal repeating relays, and a Redstone logic controller.
![[SUC]Surival Useful Circuit生电全家桶](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/9472.webp)
[SUC]Surival Useful Circuit生电全家桶
生电全家桶 An advanced Minecraft survival redstone and automation modpack featuring Carpet and Masa mods.
SecretRooms-Unofficial
Secret Rooms mod, now ported to 1.20.1,1.21.1 by bay4lly! Features fully functional camouflage blocks, Ghost Blocks, and hidden Redstone. Optimized rendering and bug-free performance for the ultimate stealth experience. Unofficial & high-performance.
Create Train
Main about Create and its trains,better player models and the maids,those who like above will definitely want to download it! WARNING:don't let the Maids drive the Trains(or the other Contraptions), there may be unforeseen problems! BUT NOT ONLY THEAE.
Redstone Sound Slider
Adjust your piston / dispenser / trapdoor / buildstone volume separately from other blocks.
GD656极致生电整合包
An ultimate power generation integration package specially designed for Redstone players
AsguhoServer
Simply a really optimized server with the tools you need to build awesome contraptions. This modpack include mods such as carpet, syncmatica etc.
Redstone Essentials
The most essential mods for Technical Minecraft.
Survival enhancement-生存增強
Modpack for Redstone enthusiasts. 適合紅石玩家的輔助模組包。
Optimized Play
this it a optimizing help you have good fps and you can use metalmod for mac and sodium,iris,phosphor,...
Create Collision Crashfix
Fixes the Create 6.0.10 server crash where moving contraptions (pulley/drill quarries) throw NullPointerException "mf.axis" is null
Redstone Helper
Mod which must you to help with redstone!
Networks
Redstone-Free Automatic Storage Systems, Vanilla-integrated
Redstone Optimized
An Modpack that includes some auxiliary modules and allows you to play Minecraft smoothly. 一個整合包，包含一些輔助模組，同時又能流暢遊玩Minecraft。
RedstoneCore OptiX「红枢智核」
🚀 红枢智核 RedstoneCore OptiX 零延迟红石 × 光影可视化 × 暴力优化 | Zero-Tick Redstone × RTX Vision × Quantum Optimization 🖥️ 核显58帧→独显100+帧 | 🖥️ iGPU 58FPS → dGPU 100+FPS 🌌 动态体积云+零降帧 | 🌌 Dynamic Clouds + Zero FPS Loss
All Of Utility 2
Redstone tech, carpet+addons, exploration, visual, QOL, building tools.
MaxOptimize
optimization Bioelectricity Redstone Beautify
Smooth Doors Animations
This mod add a smooth animation when opening doors in minecraft, instead of the instant opening without an animation
像素城_魔法核心整合包【PixelCity_MagicCore Modpack】
《像素城》魔法核心整合包（1.21.11版），专注生存红石工程。为自动化系统、多人性能优化及技术向Minecraft玩法量身打造。PixelCity MagicCore Modpack (1.21.11) for Survival Redstone Engineering. Optimized for automation systems, multiplayer performance, and technical Minecraft gameplay.
AntiRedstoneLag
prevents lag machine in server
create-ultimate-addon-pack
A Create-focused NeoForge 1.21.1 modpack built around Create and Create: Aeronautics, with a large suite of Create add-ons, performance optimizations, and Sodium/Iris shaders with Colorwheel contraption lighting — plus a built-in Korean compatibility mod.
PowerStones
Overlapping wires of Redstone, Bluestone, Greenstone and Yellowstone
Moar Redstone
The Moar Redstone datapack adds a bunch of new Redstone devices to the game, from wireless Redstone to configurable timers in a single block.
Redstone Additions
Best redstone&tech datapack, Super optimized, 55+ blocks (Block breaker, block placer, filters, conveyors, item pipes, breeder, generators, gates, chunk loader, wireless redstone, multiblocks, jetpacks and so much more ! )
create aeronautics (update) modpack
(update)A Create modpack with Create Aeronautics, focused on automation, machines and flying contraptions.
Relics: Sable Compat
Fixes Relics Chorus Staff teleporting incorrectly on Sable/Create Aeronautics moving contraptions and sublevels
Redstone Lectern
Optimized for Redstone: with a permanently attached 15 page book, visible page numbers, and click to turn pages
Create: SatisFactory
Master the art of automation with a high-performance modpack. Featuring Create Aeronautics, this pack transforms your machines into dynamic physical contraptions with real-world momentum and interaction. No bloat, just pure engineering.
Redstone OptiUnity一体化红石优化
A redstone & optimization modpack for vanilla Minecraft servers. 一款红石优化的整合包，适用于原版Minecraft服务器。
RedProtect
Prevent redstone clocks that might lag the server
Copper Wiring
Lightning Rods can function as electrical wires, transferring power in ways Redstone cannot! Circuitry has been transformed!
![AntiRedstone| Advanced Redstone Lag Prevention [1.18 - 1.21.4]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/149097.webp)
AntiRedstone| Advanced Redstone Lag Prevention [1.18 - 1.21.4]
A performance-friendly plugin that blocks all redstone activity on your server and reports coordinates of redstone spam attempts.
![2Gather [Aeronautics]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/curseforge/228022.webp)
2Gather [Aeronautics]
A Create-focused modpack with advanced redstone logic using More Red, magic through Ars Nouveau and Apotheosis, engineering, automation, airships, exploration, and carefully selected mods for a polished, high-performance experience.
SRC
Survival,Redstone and Creative
LaggyChunkFinder
A simple , light weight user friendly tool to find the laggiest chunks in your Server. Based on Tile Entity (chests, hoppers, shulkers etc), Entity and Redstone activity
![红石生电冒险优化[Redstone Power Adventure Optimization]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/112765.webp)
红石生电冒险优化[Redstone Power Adventure Optimization]
融合了多种优质模组与资源包，让玩家更容易上手mc，另外增加了红石生电优化，增加其实用性，以及游玩体验.(It integrates multiple high-quality mods and resource packs, making it easier for players to get started with MC. Additionally, it has optimized the generation of redstone electricity, enhancing it)