CurseForge · Minecraft mod
Deadly World
Makes the world more dangerous to explore and mine in
Quick answer
Which Deadly World release should I use?
Deadly World deadlyworld-1.20.1-1.2.3.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Deadly World 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 Deadly World deadlyworld-1.20.1-1.2.3.jar need?
deadlyworld-1.20.1-1.2.3.jar. Change the file and its required mods may change too.
Install Crust first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Deadly World without breaking your instance.
Built for Deadly World deadlyworld-1.20.1-1.2.3.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use deadlyworld-1.20.1-1.2.3.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Crust first. We found matching files for this game-version and loader setup.
- 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 deadlyworld-1.20.1-1.2.3.jar. It opens that exact file at the source.
About this project
What does Deadly World add?
Deadly World
Source: https://github.com/FatherToast/
Discussion: https://discord.gg/GFTzTdX
Ever thought the world was just a little too nice to you? Have you ever wished mining and exploring was more dangerous, exciting, and also dangerous? Look no further!
This mod adds a bunch of new world generation features that make living more difficult! These features include custom spawners, mimics, pitfalls, silverfish veins, lava pockets, traps, doohickeys that shoot things at you and more!
The frequency of features and mobs in mob spawners (as well as nearly everything else) can be adjusted in the configs. Additionally, the features added can be very heavily modified and inserted into mod-added dimensions via data pack.
If you find any bugs or issues, please use the GitHub issues tracker, accessible from the GitHub link or the above "Issues" tab.
Features:
Highly configurable!
- Pretty much everything has a config option
- Configure each dimension individually
- Overworld and Nether supported baseline; other dimensions require a data pack for full support
Things that generate in caves!
- Spawners & overhaul of spawner mechanics
- Lootable chests (allergy warning: may contain traces of death)
- Floor traps, pitfalls, and spike traps
- Towers - small structures that fire projectiles at you
- Overhaul of monster room (AKA dungeon) mechanics
Underwater terrors!
- Sea mines
- Underwater floor traps
Stuff buried in solid ground!
- Water and lava pockets
- A new "runny" type of lava that flows like water in all dimensions
- Surprise spawners and chests
- Infested blocks & overhaul of infested block mechanics
- Sand deposits, because you, too, deserve to have sand in every corner of your inventory that you can't seem to get rid of no matter how many times you clean it out
Project description from CurseForge.
Pick your setup
Deadly World by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader build1.12.2
1 loader build1.7.10
1 loader build1.5.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Deadly World versions and loaders
deadlyworld-1.20.1-1.2.3.jar
15 May 2026
deadlyworld-1.20.1-1.2.2.jar
18 Nov 2025
deadlyworld-1.20.1-1.2.1.jar
7 Nov 2025
deadlyworld-1.20.1-1.2.0.jar
4 Nov 2025
deadlyworld-1.20.1-1.1.1.jar
15 Sept 2025
deadlyworld-1.20.1-1.1.0.jar
14 Jun 2025
deadlyworld-1.20.1-1.0.0.jar
13 Jun 2025
deadlyworld-1.1.1_for_mc1.12.2.jar
23 May 2021
deadlyworld-1.1.0_for_mc1.12.2.jar
22 May 2021
deadlyworld-1.0.0_for_mc1.12.2.jar
23 Jan 2019
DeadlyWorld-1.7.10-1.0.2.jar
14 Sept 2014
DeadlyWorld_0.2_for_MC_1.5.2.zip
25 Jun 2013
Looking for an older file? The official CurseForge project page is in Resources.