CurseForge · Minecraft mod
Cataclysm RPG
An RPG boss-focused mod that also finds itself with machines and energy, but also some magic.
Quick answer
Which Cataclysm RPG release should I use?
Cataclysm RPG cataclysm-1.0.3_01-neoforge-1.21.1.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 Cataclysm RPG 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 Cataclysm RPG cataclysm-1.0.3_01-neoforge-1.21.1.jar need?
cataclysm-1.0.3_01-neoforge-1.21.1.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 Cataclysm RPG without breaking your instance.
Built for Cataclysm RPG cataclysm-1.0.3_01-neoforge-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use cataclysm-1.0.3_01-neoforge-1.21.1.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 cataclysm-1.0.3_01-neoforge-1.21.1.jar. It opens that exact file at the source.
About this project
What does Cataclysm RPG add?
You find yourself at an unfamilliar world, and your goal is to defeat the 8 bosses to emerge victorious. You have access to new technology, magic, threats and structures. With dozens of new weapons, armor, even jetpacks that allow you to fly at the cost of energy, mulitiple advancements and even Hardmode, will you survive? JEI RECCOMENDED! PROGRAMMER ART RECCOMENDED! LOOT TABLE VIEWER RECCOMENDED!
**LORE:**You have been set up in a timewarp by the evil leader of the mobs, Terminator. You are in an alternate timeline where the Ancient Builders died at the very start by a meteor shower, letting darkness prosper and monsters to take over. You need to kill all the Terminator's army commanders and work your way to the top, so you can kill him.
**GUIDE:
PRE-HARDMODE**
Kill endermen to get Ender Shards, craft them into an Ender Pearl, get Ectoplasm from ghosts underground and 2 diamonds, and make the Call of the Watcher. Summon and defeat the Watcher. With the Dark Shards from the Watcher, Get an Egg, Uranium Chunks from Uranium Ore, and Boron Ingots from Boron Ore. Create the Hydra Egg, and challenge the Hydra. Get the Chaos Stars and Corruption it drops. Let Corruption spread until there is at least 20 blocks, and try your luck to get Demonite Nuggets. Make the Overloaded Sludge. Challenge the Sludgeheart and get the Slimy Heart it drops. Get an Alloy Smelter and a Coal Generator, smelt Iron Ingots a second time at a furnace to get Purified Iron, craft Steel with Purified Iron and Coal, craft circuits and with the Malice Core, create the Suspicious Looking Communicator. Trigger an Alien Invasion, survive for 10 minutes as aliens try to kill you, and progress into Hardmode.
HARDMODE
Gear up with the Alien Circuits and Cybernetic Scrap the aliens gave you, making Cybernetic Armor, a Laser Gun and a Lightsaber. Alternatively, go mining at Space to get Onyx Armor. Get a Spaceship to go to the Space.. Craft an Ender Artifact and challenge the Star Scouter. With the Galactic Pearls he drops, go to a Dungeon, a structure with yellow unbreakable bricks that spawns underground. You will find exclusive enemies there. Kill as many Cursed Skulls or Armored Slimes as you can until you get the Cracked Artifact (only drops at Hardmode), and beware of the Ender Blazes. Combine the Pearl ,the Cracked Artifact and Ferroboron, an alloy of Steel and Boron to the Cursed Artifact. Go to the altar at boss room in the bottom layer and summon the Dungeon Master. Kill him and get the Matrixes of Creation he drops. Get some Cybernetic Ingots and craft the Mechanical Brain. Summon and kill the Motherboard, get the Core of Greed and prepare for the final step. Get some more Cybernetic Ingots and some Onyx Ingots from space (you go there with a Spaceship), combine them with the Core of Greed and get the Hazardous Transmitter. The Terminator will then spawn, engulfing you at a thick gray fog, while speeding up the day night cycle. He has a lot of attacks, most notable being his deathray, and his Mechanical Shell, where he summons a shell that, if not killed in time, will summon a clone of the Terminator with 40HP. After killing the Terminator, you have won and you get various things, most notably a sword with 22 damage, a super fast drill, and a jetpack that never runs out, allowing you to fly infinately.
Discord: https://discord.gg/Y7KfDHKek8
Project description from CurseForge.
Pick your setup
Cataclysm RPG 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
Cataclysm RPG versions and loaders
cataclysm-1.0.3_01-neoforge-1.21.1.jar
26 Aug 2026
cataclysm-1.0.2-neoforge-1.21.1.jar
13 Aug 2026
cataclysm-1.0.1_01 (patch 1)-neoforge-1.21.1.jar
7 Aug 2026
cataclysm-1.0.1-neoforge-1.21.1.jar
7 Aug 2026
cataclysm-1.0.0_01 (patch 1)-neoforge-1.21.1.jar
5 Aug 2026
cataclysm-1.0.0-neoforge-1.21.1.jar
5 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.