Nightmares
by Concorde
Nightmares adds nightmare spawns to the Mobs category, with the Whither affected by a small spawn change, for Fabric on 1.21.1.
What it does
Nightmares makes nightmare-type mobs spawn in the game, and the changes are written to wake the player up if one appears nearby. A small change also alters how Whither spawns. A server running it needs every connecting player to have it too.
Fabric is the only loader with a file, and the latest build is 1.0.0 for 1.21.1, published on 2026-07-11. The author notes that the mod is built for 1.21.1 alone. The code is not open source, and the mod is released under All rights reserved.
Key features
Nightmare spawns
Nightmare mobs spawn in the game as a new hostile group, adding threats to ordinary play.
Wake-up behavior
A spawned nightmare is meant to wake the player when it appears, instead of staying hidden.
Whither spawn change
A small change alters how Whither spawn, so encounters with them differ from vanilla.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Nightmares need Fabric API?
Does Nightmares have to be installed on the server?
Which game versions does Nightmares support?
In the catalog
Nightmares is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
This mod adds Nightmares to Minecraft. If you have a Nightmare a Mob will spawn as soon as you wake up. There is a small change that there will spawn a Whither thoe. This Mod is only compatible with 1.21.1 but i will add a update for it to be combatible with a lot more versions.
Official listing
- Modrinth page
- modrinth.com/mod/nightmares
- Owner
- Concorde
- Published
- 2026-07-11
- Updated on Modrinth
- 2026-07-11
- Facts verified
- 2026-10-15