Minecraft version
Back to mods 
CurseForge · Minecraft mod
Observer.jar
a horror minecraft mod
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Observer.jar release should I use?
Latest stable file Observer.jar
Game version 1.20.1
Loader Forge
Observer.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Observer.jar required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source does not explicitly classify this release as client-only or server-only.
What else does Observer.jar need?
Observer.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Observer.jar without breaking your instance.
Built for Observer.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Observer.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Observer.jar. It opens that exact file at the source.
About this project
What does Observer.jar add?
👁️OBSERVER.JAR👁️
A psychological horror mod for Minecraft 1.20.1 (Forge)
📖 LORE
Something ancient is watching you.
A mysterious chest appears, containing a book that sets something in motion.
From that moment on, reality begins to twist…
🎮 FEATURES (NO SPOILERS)
| Feature | Description |
|---|---|
| 🎲 Random Events | The world around you starts behaving strangely. Sounds, visions, and unexplainable sensations will test your senses. |
| 💬 Mysterious Messages | Occasionally, messages appear in chat. They seem to come from somewhere… or someone. |
| 🏛️ A Lost Structure | Somewhere in the world, an ancient construction awaits to be found. Its coordinates may be revealed in unexpected ways. |
| 🔮 Secrets to Uncover | Something needs to be activated. You'll have to explore, gather, and figure out what to do – the game won't give you all the answers. |
| 📸 Sudden Visions | At certain moments, images may flash on your screen. Pay attention. They might contain important clues. |
| ⚔️ A Special Tool | You'll need to craft a unique item. Its purpose isn't obvious, but it's essential for what lies ahead. |
| 👾 Something Awaits | At the end of the journey, a massive presence will confront you. Be prepared. |
| 🌌 A Distant Place | There is a dimension beyond yours. How to get there? Only exploration will tell. |
| 💎 Powerful Rewards | Those who face the challenges will find treasures worthy of the journey. |
I hope you like it.
Project description from CurseForge.
Pick your setup
Observer.jar by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Observer.jar versions and loaders
Observer.jar
20 Feb 2026
Client Source doesn’t say Server Source doesn’t say Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
Looking for an older file? The official CurseForge project page is in Resources.
mod CurseForge + Modrinth · Minecraft
GrowableOres Extension
A simple mod subsidiary of GrowableOres add a machine to help you process your ore cane.
mod CurseForge · Minecraft
ENSO: Mythic Adventure
An epic Fabric 1.20.1 Chinese-myth adventure: battle celestial bosses, master legendary powers, and explore sacred realms.
mod CurseForge · Minecraft
Create + QualityOfProgression Compatibility patch
There is a bug between create 0.5.1.f and quality of progression 1.3-forge that prevents create blocks with more than 1 tool tag from being breakable. This fixes it.