PSYCHOSYS
PSYCHOSYS adds a sanity meter to Forge worlds that drops in darkness, caves and long stretches without rest, and brings frightening visuals and sounds as it falls.
What it does
A sanity value from 0 to 100 starts at 100 and falls over time under certain conditions: at night, while underground in caves, and after prolonged inactivity. Light and warmth push it back up, so daytime sunlight and standing near torches, campfires or a bed restore the value. The current level is shown in an indicator in the upper left corner of the screen, so a player can see how close the character is to the lowest levels.
The sanity system is the core of the mod, and the psychological horror effects are tied to it. Visual and sound effects become more intense as the value drops, which is the main reason the mod is labeled as horror content. The mod is a Forge package for 1.20.1 – 1.20.6, and the environment is client and server, so the server and every player need it. The license is All rights reserved, so the mod is not open source.
Key features
Sanity meter
A 0 to 100 sanity value that starts at 100 and is displayed in the upper left corner of the screen.
Conditions that lower sanity
Night, caves and prolonged inactivity each reduce the value, so a long dark trip costs more than a day in the open.
Conditions that restore sanity
Bright daytime light, torches, campfires and beds raise the value again, giving a reason to return to lit areas.
Frightening visual and sound effects
Visual and sound effects grow more intense as sanity drops, adding a horror atmosphere to the game.
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 horror experience built around a sanity meter, and server owners who run horror-themed worlds. Because the mod has intense horror effects, its author notes a warning that play is at the player's own risk.
How it compares
Kabus - Psychological Horror is a Forge mod for 1.20.1 that also runs on client and server under All rights reserved. R's Sanity System covers Forge and NeoForge for 1.20.1 – 1.21.4 with the same environment and license. Sightless is server-side only, so players join without installing it, and it is published for 1.20.1 under the Apache License 2.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| PSYCHOSYS | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-08-18 |
| Kabus - Psychological Horror | Forge | 1.20.1 | Client and server | 2026-06-22 |
| R's Sanity System | Forge and NeoForge | 1.20.1 – 1.21.4 | Client and server | 2025-12-22 |
| Sightless | Forge | 1.20.1 | Server-side only | 2026-06-15 |
Questions
Does PSYCHOSYS need to be installed on the server?
Which loader does PSYCHOSYS support?
What lowers the sanity value in PSYCHOSYS?
In the catalog
PSYCHOSYS is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 11,154 mods support Minecraft 1.20.6.
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What the author says
Sanity Mod is a psychological horror mod that adds a sanity system and frightening visual and sound effects. ⚠ Warning: Mod contains intense horror effects. Play at your own risk.
Official listing
- Modrinth page
- modrinth.com/mod/psychosys
- Owner
- Stormy_editor
- Published
- 2026-05-12
- Updated on Modrinth
- 2026-08-18
- Facts verified
- 2026-10-15