Insanity ShaderShaders · 1.8 – 1.21A stylized, horror themed Iris shaderpack with high customizability and performance.

A high-quality realistic, yet also somewhat stylized shaderpack.
Direct download from Modrinth · 3,398,714 downloads
Kappa Shader is a shader pack made by RRe36. A high-quality realistic, yet also somewhat stylized shaderpack.
It supports Minecraft 1.16 – 1.21. It has been downloaded 3,398,714 times on Modrinth. The last update came out on Feb 28, 2025.
Kappa Shader has had 4 releases on Modrinth since May 9, 2023. None of them came out in the past year. The newest is 5.3, released on Feb 28, 2025. It is made for Minecraft 1.16.5 – 1.21.4. It runs on Iris and Optifine. The download is 3.7 MB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
5.3 | Feb 28, 2025 | 1.16.5 – 1.21.4 | Release |
5.2 | Jun 12, 2023 | 1.16 – 1.20.1 | Release |
5.1 | May 12, 2023 | 1.16 – 1.20 | Release |
5.0a | May 9, 2023 | 1.16 – 1.19.4 | Release |
A shaderpack that aims towards a realistic, but also authentic look. So it is not plainly using physically accurate vales and equations like many other packs do. Instead, while still using many accurate calculations, it is tweaked to reproduce what you could observe in nature, which usually goes beyond just having equations to describe most phenomenons.
and many, many more.
Written by RRe36. Read it with pictures on Modrinth.
Install Iris (with Sodium) or OptiFine for your Minecraft version: shaders need one of them.
Download the .zip file from Modrinth. Do not unzip it.
In Minecraft, open Options, then Video Settings, then Shader Packs, and click Open Shader Pack Folder.
Drop the .zip file into that folder, pick Kappa Shader in the list and click Done.
Shaders are heavy on the graphics card. If the game gets slow, pick a lower profile in the shader settings.
Full guide: How to install Minecraft shaders
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| 3.4M | 1.16 – 1.21 | Feb 28, 2025 | Free | |
| 8M | 1.8 – 1.21 | Jun 13, 2024 | Free | |
| 2M | 1.18 – 1.21 | Feb 28, 2025 | Free | |
| 364K | 1.20 – 26.x | Sep 29, 2026 | Free |
Not yet. The newest version it supports is Minecraft 1.21.
Yes. Kappa Shader is free to download from Modrinth.
Yes. The last update came out in the past day.
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