CurseForge · Minecraft mod
Simple motion detector
a mod that adds the famous Motion Detector from the movie Alien in a vanilla friendly way!
Quick answer
Which Simple motion detector release should I use?
Simple motion detector motion_detector.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 Simple motion detector required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Simple motion detector motion_detector.jar need?
motion_detector.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 Simple motion detector without breaking your instance.
Built for Simple motion detector motion_detector.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use motion_detector.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 motion_detector.jar. It opens that exact file at the source.
About this project
What does Simple motion detector add?
This is a simple, yet vanilla friendly mod, that aims to bring into minecraft the famous motion detector from the film Alien. This motion detector has a built in compass to help you recognize the direction of the ignal, because it will give an acustic and visual signal for every mob that is in a 60x10x60 box. For every entity, there are 3 distances and sounds: long distance, the sound is low, and low is evn the frequency; medium distance, the pitch gets more high and the frequecy as well; and lastly, close distance, the pitch become very high and the frequecy is also very high, to warn you that something is very close to you.
It is recommended to use it possibly in a close environment, with as litle entities as possible, because you will get a lot of beeps if you are wandering aroud in a forest, since it detects every entity.
This mod is in BETA, so if you stumble across any bugs or errors, please leave a comment, and i will try to fix it :)
Project description from CurseForge.
Pick your setup
Simple motion detector 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
Simple motion detector versions and loaders
motion_detector.jar
13 Sept 2025
Looking for an older file? The official CurseForge project page is in Resources.