Hayley Smith
by prosto_p4jos
Hayley Smith is a Fabric mod for 1.21.1 that ties a sanity meter to darkness, night and light, and adds horror events to survival play.
What it does
Sanity is the central stat. It drops in darkness and at night, and it recovers when the player stands in light. Once sanity falls low enough, abnormal events start to occur, including visual and audio effects that imitate a mental breakdown. After dark, sanity drains two to three times faster, hostile creatures turn up more frequently and grow more threatening, and random night events bring strange sounds, visions, voices and an extreme darkness effect.
The mod works in single-player and on servers, with full multiplayer support. Because it is a client and server mod, both the server and every player need it installed. Its sanity commands let server owners set the spawn type and control sanity, and a restore command brings sanity back to full. Files exist for Fabric only, for 1.21.1.
Key features
Sanity meter
A sanity value drops in darkness and at night, and light restores it over time.
Night events
Nights bring random strange sounds, visions, voices and hostile creatures that turn up more frequently and grow more threatening.
Breakdown effects
Low sanity triggers visual and audio effects that imitate a mental breakdown.
Strange chests
Players can find strange chests and books while exploring, and search for secrets alone or together with friends.
Sanity commands
Server owners can set the spawn type and control sanity with dedicated commands, and a restore command refills it.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want a survival horror layer on top of vanilla Minecraft, alone or on a multiplayer server where the group explores dark areas together.
How it compares
Sanity System is a Fabric mod for 1.21.4, with the same client and server environment and under All rights reserved, so it is not open source. Sanity Level is licensed under the MIT License and covers 1.21 – 1.21.11, which makes it the wider version range. Vanilla But Wrong is also under the MIT License, for 1.21 – 1.21.11, and is run on both client and server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Hayley Smith | Fabric | 1.21.1 | Client and server | 2026-03-12 |
| Sanity System | Fabric | 1.21.4 | Client and server | 2026-03-31 |
| Sanity Level | Fabric | 1.21 – 1.21.11 | Client and server | 2026-08-07 |
| Vanilla But Wrong | Fabric | 1.21 – 1.21.11 | Client and server | 2026-05-08 |
Questions
Does Hayley Smith need Fabric API?
Does the server need Hayley Smith?
Can server owners change how sanity works?
In the catalog
Hayley Smith is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
You may encounter strange chests, study books, and search for new secrets together with your friends Sanity decreases in darkness and at night. Sanity regenerates in light. Abnormal events occur when sanity decreases. Visual and audio effects of mental breakdown.
Official listing
- Modrinth page
- modrinth.com/mod/hayley-smith
- Owner
- prosto_p4jos
- Published
- 2026-03-12
- Updated on Modrinth
- 2026-03-12
- Facts verified
- 2026-10-15