CurseForge · Minecraft mod
Jekyll & Hyde
Earn the trust of Dr. Jekyll in his Victorian mansion, uncover his secret, and survive the night Mr. Hyde breaks free.
Quick answer
Which Jekyll & Hyde release should I use?
Jekyll & Hyde jekyllhyde-1.21.1-1.0.0.jar targets 1.21.1 with NeoForge. 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 Jekyll & Hyde 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 Jekyll & Hyde jekyllhyde-1.21.1-1.0.0.jar need?
jekyllhyde-1.21.1-1.0.0.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 Jekyll & Hyde without breaking your instance.
Built for Jekyll & Hyde jekyllhyde-1.21.1-1.0.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use jekyllhyde-1.21.1-1.0.0.jar. It targets 1.21.1 with NeoForge; 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 jekyllhyde-1.21.1-1.0.0.jar. It opens that exact file at the source.
About this project
What does Jekyll & Hyde add?
Jekyll & Hyde: The Strange Case
Somewhere in your world stands a red-brick Victorian house with a grim stone laboratory behind it. Dr. Henry Jekyll lives there: a genial physician and chemist who is happy to trade with you.
The more he trusts you, the stranger his errands become. His house changes, his manner changes, and one night he sends for you. Bring him what he asks for, and Mr. Hyde comes out of him.
✦ Features
🏚 A Victorian mansion
- A rare, fully furnished house: hall, parlour, dining room, consulting room, kitchen, study, library, bedrooms and a hidden room.
- Behind it, across a walled court, stands the laboratory: an old dissecting theatre lit from the roof, a gallery, and the doctor's private cabinet.
- Find one with
/locate structure jekyllhyde:jekyll_house.
🎩 Dr. Jekyll, a merchant with a secret
- Trade with him across 5 levels of confidence. New trades appear the next day, when he restocks.
- Your trades also feed his hidden experiment. You never see the number, only its effects. He moves from respectable to strange, unravelling and finally the brink.
- The house changes with him: claw marks, spilled draught, broken glass, gas lights gone dark.
📜 A story to uncover
- 9 readable documents hidden around the house, written in the style of the 1886 novel.
- A secret bookcase, a locked laboratory and a door to the by-street.
- 13 advancements, from A Respectable Practice to The Strange Case Closed.
🎁 After the ending
- Dr. Jekyll is freed, remembers you, and has new trades. Among them is the Elixir of Constitution, a permanent +2 hearts.
- Hyde drops Jekyll's Broken Cane, a heavy, hard-knocking weapon, and the doctor's Full Statement.
🧰 Also included
- Potions and items:
- Sal Volatile: clears darkness, blindness and slowness, and steels your nerves against Hyde's roar.
- Physician's Restorative
- Crimson Reagent
- Crystalline Salt
- Craftable Victorian furnishings: gas sconces, chandeliers, alembics, a cheval glass, transom windows, a brass candlestick, the secret bookcase and Dr. Jekyll's cabinet.
- 39 original sound effects and fully original textures and models.
⚙ Configuration
config/jekyllhyde-common.toml lets you change:
- story speed;
- Hyde's health and damage;
- whether he smashes furniture;
- the house's changing decorations;
- ambient sounds.
📋 Requirements
- Minecraft 1.21.1 with NeoForge.
- Install on both client and server.
- Works on dedicated servers.
Based on Robert Louis Stevenson's Strange Case of Dr Jekyll and Mr Hyde (1886, public domain). All text, art and sounds are original.
Project description from CurseForge.
Pick your setup
Jekyll & Hyde 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
Jekyll & Hyde versions and loaders
jekyllhyde-1.21.1-1.0.0.jar
22 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.