Insomnia Notifier
by artginzburg
Insomnia Notifier is a client-side Fabric HUD mod that warns players when phantoms are about to spawn after they go three days without sleeping.
What it does
The mod shows a small icon in the status effect area that appears as the phantom threat builds. It tracks Time Since Last Rest, the count of in-game time since the player last used a bed, and the warning reflects that count. Using a bed resets the timer, matching the vanilla rule that phantoms begin to appear after three days without sleep.
The warning is tied to the doInsomnia gamerule, so it follows the server's setting. Because it runs on the client, a server does not need it to show the icon, and the overhead skylight height checks use the player's position. Sounds and extra HUD clutter are left out, keeping the notice subtle.
Installation requires Fabric API. The mod is released under the MIT License, is open source, and is published for Fabric only across 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7 and 1.21.8, with 1.0.1 for 1.21.8 as the latest file. Only the Overworld is checked, since phantoms do not spawn elsewhere.
Key features
Phantom risk icon
A small client-side icon in the status effect area warns that phantoms are likely to spawn.
Time since last rest
The mod tracks how long the player has gone without using a bed and updates the warning from that count.
Bed use reset
Sleeping in a bed clears the timer, so the warning stops until three more days pass.
Overworld only
The warning appears only in the Overworld, the only dimension where phantoms spawn.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Long solo runs
Players who explore for many in-game days without returning to a bed can see the phantom threat before it arrives.
Who it’s for: Players on Fabric who want a light, modular warning for phantom spawns, rather than a full phantom management mod.
How it compares
Controlled Insomnia is a Fabric, Forge and NeoForge mod for 1.21.1 – 1.21.10 that runs on client and server, under a Creative Commons non-commercial, no-derivatives license, so it is not open source. Disabled Phantoms is server-side only and open source under the MIT License, published for Fabric across 1.21.1 – 1.21.11, so it changes phantom spawning instead of showing a warning.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Insomnia Notifier | Fabric | 1.21.3 – 1.21.8 | Client-side only | 2026-01-03 |
| Controlled Insomnia | Fabric, Forge and NeoForge | 1.21.1 – 1.21.10 | Client and server | 2026-01-17 |
| Disabled Phantoms | Fabric | 1.21.1 – 1.21.11 | Server-side only | 2026-07-05 |
Questions
Does Insomnia Notifier need Fabric API?
Does the server need Insomnia Notifier installed?
Which game versions have files?
Does the warning depend on the doInsomnia gamerule?
In the catalog
Insomnia Notifier is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 17,695 mods support Minecraft 1.21.8.
More from artginzburg
Similar mods
What the author says
A tiny client-side icon warns when phantoms can spawn — triggered after 3 days without using a bed. No sounds, no HUD clutter, no server changes. Subtle warning appears in the status effect area.
Official listing
- Modrinth page
- modrinth.com/mod/insomnia-notifier
- Owner
- artginzburg
- Published
- 2025-04-17
- Updated on Modrinth
- 2026-01-03
- Facts verified
- 2026-10-15