How do I install JS Expanded?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does JS Expanded work with?

The listing gives Minecraft 1.21.1. This is the version stated by the author or source site, not something we verified ourselves.

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JS Expanded

Java mod listed for Minecraft 1.21. File opened and checked on 9 Oct 2026; downloads from the MC Java Mods app on Android.

by commander_wasp · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Fabric1 build
Mod loader NeoForge1 build

Minecraft version

Minecraft 1.21.1Newest

Minecraft 1.21.1Newest

⬇ Download for 1.21.1 · Fabric ⬇ Download for 1.21.1 · NeoForge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

🧬 What is JS Expanded?

JS Expanded is a complimentary mod for JurassicSaga that adds extra creatures, blocks, and related content from specific franchises that are not part of the Jurassic franchise. The goal is to include stuff that wouldn’t fit the main JurassicSaga mod, while still working alongside it as an optional add-on.

🦖 What does it add?

The mod adds new mobs, blocks, and other gameplay content based on different franchises. Right now this includes things inspired by King Kong (2005), Zoo Tycoon, and other non-Jurassic franchises, with more planned depending on suggestions and what I choose to add.

Some example creatures include:

Venatosaurus
Piranhadon
Moon Spiders
Bloodfish

⭐ Why download it?

If you want more variety, crossover creatures, and extra building or gameplay content to use with JurassicSaga, this mod is meant to give you that without changing or bloating the main mod. It’s optional, so you only install it if you want the extra stuff.

⚠️ Important info before downloading

This mod is designed to be used with JurassicSaga and will require it to function properly.
Content is based on specific franchises and may not be balanced around vanilla or main-mod progression.
Updates and additions depend on suggestions and development time, so the exact content can change between versions.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft version listed: 1.21.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as jsexpanded-fabric-1.21.1-0.1.jar — drop this file into the mods folder
Download size: 1.2 MB
Download link checked 2 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21