Illuminations Reimagined

An unofficial port of Illuminations by doctor4t and Ladysnake, updated for Minecraft 26.3, 26.2, 1.21.1 and 1.20.1 on Fabric, NeoForge and Forge.

> Disclaimer: This is an unofficial project. It is not affiliated with, maintained by, or endorsed by Ladysnake or the original Illuminations developers. Please report problems on this project's issue tracker, not to them.

Illuminations Reimagined adds ambient lights that make dark places feel alive. It behaves like the original mod, with its bugs fixed and all-new textures.

It is client-side only: it works on any server, including vanilla servers, and nothing needs to be installed on the server.

Effects

• Fireflies: at night, within a few blocks of the ground in forests, swamps, rivers, jungles, taigas, plains and savannas. Their colour depends on the biome, and they are drawn to nearby light.
• Glowworms: hanging from cave ceilings under forests, swamps, rivers and other green biomes. They drop if their ceiling is broken.
• Plankton: tiny glowing specks in dark ocean water.
• Chorus petals: drifting from chorus flowers, with a burst of petals when a flower breaks.
• Prismarine crystals: floating in the water around sea lanterns.
• Will o' wisps: small glowing spirits that rise from soul sand in Soul Sand Valleys and slip out of soul lanterns, leaving trails of sparks.
• Pumpkin spirits and poltergeists: Halloween spirits (in October by default, at night). Pumpkin spirits burst out of jack o'lanterns; poltergeists rise from skeleton skulls and from undead that die at night.
• Eyes in the dark: in October (configurable), watching from pitch-black spots. They vanish if you come close or bring light.

Compatibility

• Fabric: requires Fabric API. Settings open from Mod Menu (optional).
• NeoForge and Forge: settings open from the Mods screen.
• Works with Sodium and Iris (and Embeddium and Oculus on 1.20.1). With shader packs such as Complementary, the lights glow.

Settings

Everything can be adjusted in game or in config/illuminations_reimagined.json:

• a master switch and overall density (0 to 1000%)
• per-biome firefly, glowworm and plankton rates and firefly colours
• a switch per dimension, including modded dimensions
• seasonal settings for the eyes and the Halloween spirits
• firefly options: daytime, underground, rainbow, core brightness, light attraction
• a maximum count for every effect

Changes from the original

• Removed: donor cosmetics (auras, crowns, halos, pets and similar), the cosmetics dashboard and its online player lookups, and the self-updater.
• Fixed: fireflies that never died, teleported onto light sources or dived to the bottom of the world; spirits that froze after touching the ground; plankton floating out of the water into the sky; effects spawning in unloaded chunks; and unlimited particle counts.

The full list is in the changelog.

Credits

• doctor4t and the Ladysnake contributors created the original Illuminations and its ideas: fireflies, glowworms, plankton, chorus petals, eyes in the dark and will o' wisps. This project builds on their GPL-licensed code (version 1.10.2).
• None of the original Illuminations artwork is used. The original artwork is All Rights Reserved by Ladysnake; this project's textures are all new.

License

GPL-3.0-or-later, for both the code and the artwork. Source code: github.com/Romoslayer/illuminations-reimagined

This is a modified version of Illuminations. Original code Copyright (C) 2021 Ladysnake, licensed under the GNU General Public License, version 3 or (at your option) any later version; modifications Copyright (C) 2026 Romoslayer, under the same license. The full license text and notices are also included in every download.

The Fabric and NeoForge build setup is based on MultiLoader-Template (CC0).