CurseForge · Minecraft mod
The Undergate: Alienevo Addon
an Alien evo addon that aims to add the demogorgon from the series stranger things, a new dimension, structures and mobs.
Quick answer
Which The Undergate: Alienevo Addon release should I use?
The Undergate: Alienevo Addon The Undergate(DONT UPDATE IF YOURE NOT LAGGY) 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 The Undergate: Alienevo Addon 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 The Undergate: Alienevo Addon The Undergate(DONT UPDATE IF YOURE NOT LAGGY) need?
The Undergate(DONT UPDATE IF YOURE NOT LAGGY). 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 The Undergate: Alienevo Addon without breaking your instance.
Built for The Undergate: Alienevo Addon The Undergate(DONT UPDATE IF YOURE NOT LAGGY). Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use The Undergate(DONT UPDATE IF YOURE NOT LAGGY). 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 The Undergate(DONT UPDATE IF YOURE NOT LAGGY). It opens that exact file at the source.
About this project
What does The Undergate: Alienevo Addon add?
Basically adds the Demogorgon from Stranger things.
I also made the upsidedown and some mobs BUT im not that much experienced so expect bugs.
OBTAINMENT
First off you gotta find the hawkins lab, spawns in plains and is really rare to find so i'd recommend you to use the Explorer's Compass.

In which you can find some loot and the portal to the upsidedown.

Theres not that much inside the dimension but you can use it to farm xp for your aliens
once youre in the upsidedown you now gotta kill demogorgons or demodogs to get Demogorgon limbs.

Then smelt it either in a furnace or on a campfire to get their cooked flesh.

(i recommend doing it on a campfire because its just cooler)
Now go kill some pigs to get their heart

Youre also gonna need ender eyes and once youre done with all of this now you have to craft Vecna's Fake Eye

Which crafting recipe looks like this.

Now all is left is for you to scan it with your omnitrix and you will unlock the Demogorgon.
Took big inspiration of Dead By Daylight's Demogorgon too
(just right click while in base form)
credits to TSMC - Minecraft for the lab structure, i followed a lot of wikis and tutorials in the making of this addon and their tutorial was one of them.
also thanks to Ender2446 and Ether for helping me with some stuff in game yall the goats
:)
Project description from CurseForge.
Pick your setup
The Undergate: Alienevo Addon 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
The Undergate: Alienevo Addon versions and loaders
The Undergate(DONT UPDATE IF YOURE NOT LAGGY)
undergate.jar
4 Aug 2026
The Undergate: Alienevo Addon
undergate.jar
3 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.