Minecraft Java 1.21 Mods
Browse 8 free mods for Minecraft Java 1.21 — popular picks include RedstoneCore OptiX「红枢智核」, create-ultimate-addon-pack, Rainbow Redstone.
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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
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.
Rainbow Redstone
Make your redstone rainbow in pure vanilla! Optionally includes full customization in-game using respackopts mod.
Seus Emissions
Adds emissions properties to redstone block, emerald block and lapis block as it was in Seus PTGI.
Cardboard redstone
Makes the redstone stupid but also kinda cool-looking. Surely you can't use it as your main redstone pack (because blocks are more detailed=laggier), but it's cool
Flatworld+ Updated
A Challenging Superflat Survival with Shaders, Redstone contraptions, and a whole lot of Building Blocks
rtx 5090 mod
This mod adds a decorative model of the RTX 5090 graphics card. It is crafted from a diamond, 4 pieces of iron, 2 green dyes, redstone, and a stone button.
Neon Lamps
A mod that adds redstone controllable neon colored lamps that supports colored lighting with shaders.