Fog

Fog

Enhances fog rendering with dynamic, customizable effects—improving atmosphere and depth while preserving the vanilla experience and maintaining compatibility with other mods.

by
1.5M Downloads
fabricforgeneoforgegame-mechanicsutility
Rent Server with this Mod

Screenshots

Cave fog comparison
Badlands fog comparison
Moon phases desert fog
Weather Fog Comparison
Oak/birch forest fog comparison
Snowy taiga fog comparison

About this Mod

Requires Fabric API IMB11 Discord server Steve's Underwater Paradise - Steveplays' Discord server

Requires Fabric API (for Fabric), M.R.U and Architectury API.

Fog

As it says on the tin - Fog is a mod that completely revamps how Minecraft handles fog, including its color, start, and end points. It creates a greater sense of depth and atmosphere in Minecraft by shifting the fog start forward, maintaining the same view distance while greatly improving the visuals of the game.

Features

It should be noted that the majority of these features can be fully customized via the configuration screen or resource packs - if you're using Fabric, you will need Mod Menu to access the configuration screen.

Cave Fog

As you go deeper underground, the fog gets thicker. This adds to the spooky and mysterious feel of caves, making exploration more intense and immersive. It helps create a sense of depth, making the underground environment feel more alive and engaging.

Cave Fog comparison (left: Mod Disabled; right: Mod Enabled)

Weather Fog Modifiers

The fog adjusts with the weather, so during rain or snow, the fog will change accordingly. This adds to the overall atmosphere, making each weather condition feel distinct and visually appealing.

Weather Fog comparison (left: Mod Disabled; right: Mod Enabled)

Time-based Modifiers

Fog becomes more colorful and vibrant during sunsets, sunrises. During night the fog colour will be dependent on the current moon cycle.

An image showing the different moon phases and how they affect fog colors.
Example of sunset vibrancy (left: Mod Disabled; right: Mod Enabled)

Biome Fog Colors

Fog changes color based on the biome you're in, giving each area a unique look and feel. This helps create a coherent visual experience as you move through different biomes. It supports modded biomes and is easy to customize using resource packs, allowing for a highly personalized game experience.
Example of biome colors. (Left: Mod disabled, Right: Mod enabled)

Sky Fixes

When flying with an elytra above the clouds, the fog gradually fades away, offering a clear view of the sky without any strange horizon lines.

Additionally, clouds maintain their natural look and are not affected by fog color, ensuring they always appear consistent and visually appealing.

Sky Fixes comparison (left: Mod Disabled; right: Mod Enabled)

Configuration

Fog is extremely customizable thanks to Yet Another Config Library, you should check the configuration screen accessible via Mod Menu on Fabric, or the Mods List on NeoForge for a full list of configuration options.

A configuration screen showing a list of various transition speeds you can modify.

Dependencies

Required

Compatibility info

Compatible mods

  • Mod Menu: allows access to the configuration screen
  • Sodium: fully compatible, ensuring that your visuals remain consistent even with performance-enhancing mods
  • True Darkness - Whilst we haven't added explicit compatibility, the mod works well with our moon phase modifiers that weaken biome fog strength depending on the moon phase.
  • Shaders that use Minecraft’s default fog settings: fully compatible
  • Distant Horizons: planned for the future

Incompatibilities

See the issue tracker
for a list of incompatibilities.

Download

Fog is available for NeoForge and Fabric for 1.21-1.21.4 versions.
You can download Fog from the following locations:

FAQ

  • Q: Will you be backporting this mod to lower Minecraft versions?

    No - it takes too much time and effort to backport to older versions, and it's not worth the time investment as very little of the community is on those versions.

  • Q: Will you be supporting Forge for 1.21+?

    No, you should consider moving to the NeoForge mod loader.

  • Q: Do you support Quilt?

    Unfortunately, we are unable to provide support for issues arising from attempting to use this mod with Quilt - you are welcome to try to use it at your own risk.

  • Q: Does this mod work in multiplayer?

    Yes! This mod is fully multiplayer compatible - only clients need to have the mod installed, but if your friends have the mod installed, you should have similar visuals.

  • Q: Does only the client need this mod or does the server need it too?

    This is a completely client side mod, so only the client needs to have it installed. The server does not need to have it installed.

For Developers and Server Admins

If you want to add support for your modded biomes, you can utilize Fog's custom JSON fog definition format to create unique fog effects. The mod is fully customizable via resource packs and a dedicated configuration file.

Furthermore, if you're developing a Fabric mod, you can utilize Fog's custom datagen providers to speed your development workflow up when adding compatability with the mod.

Server owners can adjust fog start/end points and biome colors to match their server's aesthetic.

For more information, check out Fog's documentation.

License

This project is licensed under All Rights Reserved, see LICENSE.

Attribution

  • birsy, the original author of Fog Looks Good Now - many of the systems and ideas were expanded from this mod.
  • Steveplays, the author of the Biome Fog mod - who collaborated with IMB11 to bring biome fog colors to Fog.

Available Versions

Fog 1.11.0release
MC 1.21.9, 1.21.10fabric
October 7, 2025
Fog 1.11.0release
MC 1.21, 1.21.1fabric
October 7, 2025
Fog 1.11.0release
MC 1.21, 1.21.1neoforge
October 7, 2025
Fog 1.11.0release
MC 1.21.9, 1.21.10neoforge
October 7, 2025
Fog 1.10.0release
MC 1.21, 1.21.1neoforge
October 4, 2025

How to Install Fog on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.10).

3

Install Mod

Open the mod browser in the dashboard and search for "Fog". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+20 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Fog server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.

Is Fog compatible with fabric and forge and neoforge?

Fog officially supports fabric, forge, neoforge for Minecraft 1.21.10, 1.21.9, 1.21.8. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Fog – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Fog consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

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Recommended RAM
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Minimum 3 GB | per 8 players
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Details

License
LicenseRef-All-Rights-Reserved
Server-side
Optional

Supported Versions

1.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.21.21.1+13 more