Minecraft Java 1.21 Mods
Browse 6 free mods for Minecraft Java 1.21 — popular picks include Audaki Cart Engine: Faster Minecarts / Balanced for Survival / Vanilla Carts Improved, [SUC]Surival Useful Circuit生电全家桶, JoaCarpet.
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Audaki Cart Engine: Faster Minecarts / Balanced for Survival / Vanilla Carts Improved
🤩 Fast Minecart! Configurable Speed. Balanced for Vanilla/Survival. 100% glitch-free and compatible with all Redstone. Works high-speed with slopes/inclines/curves. Only vanilla track/carts needed. Can be added and removed at any time
[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.

JoaCarpet
A small carpet extension mod with useful features for redstone and storage tech (+some minor survival tweaks)
Simple Orbital Cannons
Circuit & Cartridge is a NeoForge 1.21.1 military simulation framework featuring advanced redstone, drones, orbital weapons, electronic warfare, and a public addon API, built for hardcore SMP and mil-sim servers.
Tiny Redstone Create Compat
Makes Tiny Redstone blocks compatible with Create trains and contraptions
Vibrant Rail Rider Mod (1.21.1) – Build Colorful Roller Coasters
Vibrant Rail Rider Mod adds rideable coaster seat blocks for Create. This mod gives builders a fresh coaster look that works on moving contraptions like trains, elevators, and theme park rides. Every seat comes in sixteen dye colors and attaches directly to moving structures. You can craft each piece in survival mode and change seating […]