Nightmare│夢魘

Name: Nightmare│夢魘
Author: Special_TT

Nightmare│夢魘 changes how phantoms behave on a server, so players meet a harsher version of the mobs that attack after nights without sleep.

FabricForgeNeoForgeQuiltServer required, client optionalMIT LicenseOpen source1.21.5 – 1.21.11

What it does

Phantoms spawn with reduced maximum health, set to 2, and their attacks deal 10 damage on Normal difficulty. Once a phantom has attacked a player and its health falls low enough, it dissipates and leaves drops behind, so each phantom fight ends in a defined way rather than lingering.

The mod is a server-side change: the server requires it, while a client can leave it out. Files are published for Fabric, Forge, NeoForge and Quilt, and a data pack version is also available. The release range covers 1.21.5 – 1.21.11, with 1.0.1 for 1.21.11 as the latest file across all four loaders. Nightmare│夢魘 is open source under the MIT License.

Key features

Stronger phantom attacks
Phantoms hit harder than in vanilla, with each attack dealing 10 damage on Normal difficulty.
Reduced phantom health
A phantom's maximum health is lowered to 2, so a single strike or two can end its attack.
Dissipation with drops
After a phantom attacks and its health is reduced, it dissipates and produces drops.
Sleep prevention on Normal
On Normal difficulty, phantoms stop a target from sleeping during the night.

Compatibility

Latest build for each game version and loader.

Version

1.21.111.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod

1.21.101.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod

1.21.91.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod1.0.1+1.21.9+mod

1.21.71.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod

1.21.61.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod

1.21.51.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod1.0.1+1.21.5+mod

ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Harder nights on a server

Server owners who want phantoms to remain a threat after nights without sleep can run the mod on their server while players join without installing it.

Who it’s for: Server owners who want phantoms to be more dangerous than in vanilla, and players who accept a tougher phantom encounter on a server running the mod.

How it compares

Full comparison

No Phantoms is a server-side option on Fabric, Forge, NeoForge and Quilt, built for 1.21.10 only, and is not open source. Friendly Phantoms targets a different direction, is server-side only, uses the GNU Lesser General Public License v3.0 only, and is open source, with files for 1.20.1 – 1.21.4. Phantom Deactivator covers 1.21 – 1.21.10 and is not open source.

Mod	Loaders	Game versions	Environment	Updated
Nightmare│夢魘	Fabric, Forge, NeoForge and Quilt	1.21.5 – 1.21.11	Server required, client optional	2026-04-29
No Phantoms	Fabric, Forge, NeoForge and Quilt	1.21.10	Server required, client optional	2025-12-03
Friendly Phantoms	Fabric, Forge and NeoForge	1.20.1 – 1.21.4	Server-side only	2024-11-20
Phantom Deactivator	Fabric, Forge, NeoForge and Quilt	1.21 – 1.21.10	Server required, client optional	2025-11-08

Questions

Does Nightmare│夢魘 need to be installed on the client?

No. It is required on the server and optional for players.

Which loaders does Nightmare│夢魘 support?

Fabric, Forge, NeoForge and Quilt all have files, and the data pack version is also available for server platforms. The latest file is 1.0.1 for 1.21.11 on each loader.