Source-checkedGameplay & overhauls

Difficulty Lock

by Serilum · for Minecraft

🔒 Sets a difficulty in any world, optionally locked, or force a hardcore mode requirement.

7.2MDownloads
6d agoLast updated
LicenseRef-All-Rights-ReservedLicense
Fabric · Forge +2Loaders

About Difficulty Lock

From Modrinth

🔒 Sets a difficulty in any world, optionally locked, or force a hardcore mode requirement.

A Serilum Mod. Made with love. Lots of active mods for Fabric, Forge and Neo!

CurseForge Modrinth Patreon YouTube

About the mod

Difficulty Lock adds an easy way to configure the difficulty in all (new) worlds. Can be useful for modpacks, or just in your singleplayer experience if you have a default difficulty you always play with. There are config options to force the Hardcore gamemode, disable cheats, or prevent Creative mode from being selected.

The Create World Screen is correctly updated with the config settings. Also works on (dedicated) servers.



Dependencies

Requires Collective
<img src="https://cdn.serilum.com/description/badges/dependencies/includes/customization-bundle.svg" alt="Included in Serilum&#x27;s Customization Bundle" width="416" height="49">
Environment: Server




Configurable

Configuration guide

&nbsp;&nbsp;&nbsp;All available config options:

Show Spoiler

The priority shows how the mod handles when multiple gamemodes are set to true in the config. E.g. if all are enabled all new worlds will be peaceful.

forceHardcoreMode&nbsp;&nbsp;default false
Sets the world game mode to hardcode mode and ignores the other difficulty settings when enabled.

disableCreativeModeSelection&nbsp;&nbsp;default false
Whether Creative Mode should not be possible to select in the world creation screen.

forcedDifficulty&nbsp;&nbsp;default "Hard"
The difficulty that is set in any world. Disabled leaves the difficulty as it is.

forceCheatsDisabled&nbsp;&nbsp;default false
Whether the cheats option should be forced to be disabled on the initial world creation screen.

shouldLockDifficulty&nbsp;&nbsp;default true
When enabled, locks the difficulty in any world so it cannot be changed.

shouldChangeDifficultyWhenAlreadyLocked&nbsp;&nbsp;default false
When enabled, also sets the difficulty in worlds where it has already been locked.




Showcase

With the default configuration, all worlds will be set to hard with the difficulty locked:



The Create World Screen is also updated.
Here the config options forceHard and forceCheatsDisabled are true:


The mod also allows users to be forced to play in Hardcore Mode, via the config:




Notes and links

You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.

Serilum.com contains an overview and more information on all mods available.

For issues, ideas, suggestions or anything else there is the&nbsp;Github repo. Thanks!

Highlights

From source data

Game versions

Supports 29 Minecraft versions, the newest being 26.3.

Loaders

Runs on Fabric, Forge, NeoForge and Quilt.

Footprint

Rated a light load on a server.

Difficulty Lock on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Fabric, Forge, NeoForge, Quilt
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
26.1.2-5.2-fabric+forge+neo, released 2026-10-28

Game versions by loader

LoaderGame versionsNewest
Fabric1.20.1 to 26.3 (8 versions)26.3
Forge1.20.1 to 26.3 (8 versions)26.3
NeoForge1.20.1 to 26.3 (8 versions)26.3
Quilt1.20.1 to 26.3 (8 versions)26.3

From 15 recorded builds of Difficulty Lock.

Recent builds

BuildReleasedGame versionsLoaders
26.1.2-5.2-fabric+forge+neo2026-10-2826.1.2Fabric, Forge, NeoForge, Quilt
26.3.0-5.2-fabric+forge+neo2026-10-1726.3Fabric, Forge, NeoForge, Quilt
26.2.0-5.2-fabric+forge+neo2026-10-1726.2Fabric, Forge, NeoForge, Quilt
1.21.1-5.2-fabric+forge+neo2026-10-171.21 to 1.21.1 (2 versions)Fabric, Forge, NeoForge, Quilt
1.20.1-5.2-fabric+forge+neo2026-10-171.20.1Fabric, Forge, NeoForge, Quilt
26.3.0-5.1-fabric+forge+neo2026-10-1026.3Fabric, Forge, NeoForge, Quilt

Dependencies

  • Required: modrinth project e0M1UDsY (modrinth, not in our catalogue)

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Difficulty Lock on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Gameplay & overhauls

New mechanics, content and overhauls that change how the game plays.

Runs on your server

From source side support

Modrinth lists Difficulty Lock as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
FabricForgeNeoForgeQuilt
Runs on
Serverrequired on the server
Game versions
26.3 and 28 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-29Open ↗
  • ✓AuthorSerilum, as published on Modrinth
  • ✓LicenseLicenseRef-All-Rights-ReservedFree

Difficulty Lock, answered

Generated from the mod’s own source data.

Do my players need to install Difficulty Lock?

Modrinth lists Difficulty Lock as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Fabric, Forge, NeoForge and Quilt.

Is it free?

Yes. Difficulty Lock is free to download from Modrinth. Its license is LicenseRef-All-Rights-Reserved.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Difficulty Lock on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add Difficulty Lock in one click.