Screenshot 1 of 3. Red-tinted cave scene with a grey stone floor and a tall rock spire in Bloody Shaders.
What Bloody Shaders works with.
| Platform | Java Edition |
|---|---|
| Loaders | Iris, OptiFine |
| Minecraft versions | 1.16, 1.17, 1.18, 1.19.2, 1.20.6, 1.21.1 |
Bloody Shaders is a cursed, fantasy-leaning shader pack from trece313 that pushes Java worlds toward a dark, apocalyptic mood with a red-tinted fog. It runs on Iris and OptiFine. It only affects your own machine and has no role on a dedicated host.
Shader loaders and versions
- Iris and OptiFine: Minecraft 1.16 to 1.21.1. Some builds for 1.16 to 1.21.1 require Iris Shaders.
What it changes
- Red fog. A haunting, end-of-the-world haze settles over landscapes.
- New pixelated shadows give a more atmospheric and unsettling vibe.
- Realistic water. Vanilla water is replaced with an optimized, more immersive surface.
The creator lists further lighting and shadow work and new fog colours as planned, so the current look is a single red palette.
Installation
- 1.Install Iris Shaders or OptiFine first. Bedrock cannot run either.
- 2.Open Video Settings, choose Shaders, then open the shaderpacks folder.
- 3.Drop the pack's .zip into that folder.
- 4.Pick Bloody Shaders in the shader menu and load a world.
If the pack does not appear or the screen stays vanilla, the shader troubleshooting guide covers the usual causes.
Performance and trade-offs
Modrinth tags the pack with potato, low and medium performance levels, plus a screenshot tag. Treat those as the creator's positioning, not a hardware promise.
Questions about Bloody Shaders.
4 questions
How do I install Bloody Shaders?
Install Iris or OptiFine, open Video Settings and choose Shaders, then drop the pack's .zip into the shaderpacks folder. Back in the shader menu, select Bloody Shaders and load a world. Some builds require Iris Shaders. Bedrock cannot run Iris or OptiFine.
Does Bloody Shaders work with Iris and OptiFine?
Yes. The pack lists both Iris and OptiFine as supported loaders, from 1.16 to 1.21.1. You need one of them installed, because shader packs cannot run on vanilla Java without a loader.
Does Bloody Shaders work on Bedrock?
No. It is a Java pack, and Iris and OptiFine are Java mods that Bedrock cannot run. Bedrock players need a different pack format built for that platform.
Is Bloody Shaders good for low-end PCs?
Modrinth tags it as potato, low and medium in performance impact, so it is positioned as light to moderate. Actual frame rates depend on your hardware, loader and settings, so test it on your own machine.
