You will need OptiFine or Iris Shader Mod to run this, with Iris generally providing better performance on modern Minecraft versions.
As the retro-horror genre expands into 2025 and beyond, expect to see this shader pre-packaged with indie titles. It is becoming the gold standard for "PSX filter."
Drag and drop the downloaded .zip file into your .minecraft/shaderpacks folder.
Search for "Nostalgiavx Shader preset pack" (often found in community "Mega Bezel" packs). Look for files ending in .slangp (for Vulkan/Metal) or .glslp (for OpenGL).
As a modern shader pack, it is constantly updated to support new Minecraft versions and the Iris shader mod. How to Install NostalgiaVX (2026 Updated Guide)
You will need Iris Shaders (preferred for performance) or Optifine installed on Minecraft Java Edition. How to Get the Best Look
NostalgiaVX is more demanding than the standard version due to its voxel-based path tracing. User reports suggest it typically falls between Complementary Reimagined on the performance scale. Requirement / Detail NVIDIA or AMD supporting OpenGL 4.3+ Iris 1.6.2+ (recommended) or Windows or Linux Typically supports versions 1.16.5 to 1.21.4 How to Get NostalgiaVX Unlike the standard Nostalgia Shader
Beautiful light-to-dark transitions and realistic underwater depth.
One of the biggest limitations of the vanilla Minecraft engine is that all light sources emit the same yellowish-white light. Nostalgiavx features full colored light support. Redstone torches emit a deep crimson glow, soul lanterns cast an eerie blue light, and sea lanterns wash underwater monuments in teal. 4. Dynamic Volumetric Fog and Smoke