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Dreadlight – Horror Atmosphere Shader

Dreadlight – Horror Atmosphere Shader

SHADER
A horror atmosphere shader for Minecraft (Iris & OptiFine): crushing darkness, creeping fog, film grain and flicker. Fully adjustable in-game.
by ClipClipper
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Updated Oct 14, 2026
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Fantasy Realistic Vanilla
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Dreadlight turns your world into somewhere you don't want to be alone.

A lightweight horror shader for Minecraft, compatible with Iris and OptiFine. It crushes ambient lighting so torches and lava become your only real lifeline, wraps distant terrain in a suffocating fog, and layers film grain, subtle chromatic aberration and an unstable light flicker on top for a found-footage kind of dread.

Features

  • Crushed ambient lighting — real darkness, not just dim
  • Creeping fog that swallows the horizon
  • Film grain + chromatic aberration for an unsettling look
  • Tightening vignette
  • Occasional flicker, like a torch about to die
  • Every value adjustable in-game (Shader Options): fog density, grain, darkness, vignette, flicker

No heavy shadows or GPU cost — just pure, oppressive atmosphere. Perfect for horror maps, atmospheric survival worlds, and creepy let's-plays.

ShaderHorreur.zip
MC 1.21.2-Snapshot, 1.21, 1.21.6-snapshot, 1.20.2-Snapshot, 1.20.5-Snapshot, 1.21.1-Snapshot, 1.19.3, 1.20.2, 1.19.4, 1.21.8, 1.19.4-Snapshot, 1.20.5, 1.21.5, 1.21.4, 1.21.5-Snapshot
Release 2026-07-18 Get

Requirements & install

How to use this shader in Minecraft
Shader loader
Iris or OptiFine
Minecraft
1.21 – 1.21.8
Install folder
.minecraft/shaderpacks

How to install shaders

  1. Install a shader loader for your Minecraft version: Iris (with Sodium) or OptiFine.
  2. Download the shader pack .zip file (do not extract it).
  3. Put the .zip into the shaderpacks folder (.minecraft/shaderpacks).
  4. In game open Options → Video Settings → Shader Packs, select the pack and apply it.
Browse more: Iris shaders OptiFine shaders Shaders for 1.21.8 All shaders

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