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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.
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 default false
Sets the world game mode to hardcode mode and ignores the other difficulty settings when enabled.
disableCreativeModeSelection default false
Whether Creative Mode should not be possible to select in the world creation screen.
forcePeaceful default false
Priority 1: Sets the difficulty in any world to peaceful when enabled.
forceEasy default false
Priority 2: Sets the difficulty in any world to easy when enabled.
forceNormal default false
Priority 3: Sets the difficulty in any world to normal when enabled.
forceHard default true
Priority 4: Sets the difficulty in any world to hard when enabled.
forceCheatsDisabled default false
Whether the cheats option should be forced to be disabled on the initial world creation screen.
shouldLockDifficulty default true
When enabled, locks the difficulty in any world so it cannot be changed.
shouldChangeDifficultyWhenAlreadyLocked default false
When enabled, also sets the difficulty in worlds where it has already been locked.
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:
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 Github repo. Thanks!
All Versions
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[26.3.0-5.0-fabric+forge+neo] [Fabric/Forge/Neo] 26.3.0-5.0
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Changed the mod's Java package to com.serilum.*.<br />Updated mod information in the mods.toml and fabric.mod.json files.<br />No functional changes.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.2.0-5.0-fabric+forge+neo] [Fabric/Forge/Neo] 26.2.0-5.0
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Changed the mod's Java package to com.serilum.*.<br />Updated mod information in the mods.toml and fabric.mod.json files.<br />No functional changes.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.1-5.0-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.1-5.0
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Changed the mod's Java package to com.serilum.*.<br />Updated mod information in the mods.toml and fabric.mod.json files.<br />No functional changes.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.20.1-5.0-fabric+forge+neo] [Fabric/Forge/Neo] 1.20.1-5.0
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Changed the mod's Java package to com.serilum.*.<br />Updated mod information in the mods.toml and fabric.mod.json files.<br />No functional changes.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.3.0-4.9-fabric+forge+neo] [Fabric/Forge/Neo] 26.3.0-4.9
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Updated mod to Minecraft version 26.3.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.2.0-4.9-fabric+forge+neo] [Fabric/Forge/Neo] 26.2.0-4.9
by Serilum on Oct 09, 2026
Download
<h2><img src="https://cdn.serilum.com/description/nameplate/whats-new.svg" alt="What's new"></h2><p>Updated mod to Minecraft version 26.2.</p><br><h2><img src="https://cdn.serilum.com/description/nameplate/historic-changelog.svg" alt="Historic changelog"></h2><p>The complete changelog with detailed information about previous versions can be found on my website:<br> > <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank" rel="nofollow noopener">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.1.2-4.9-fabric+forge+neo] [Fabric/Forge/Neo] 26.1.2-4.9
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 26.1.2.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.1.1-4.9-fabric+forge+neo] [Fabric/Forge/Neo] 26.1.1-4.9
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 26.1.1.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.1.0-4.9-fabric+forge+neo] [Fabric/Forge/Neo] 26.1.0-4.9
by Serilum on Oct 09, 2026
Download
<p>(26.1) Fixed the mod not loading correctly.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[26.1.0-4.8-fabric+forge+neo] [Fabric/Forge/Neo] 26.1.0-4.8
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 26.1.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.11-4.8-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.11-4.8
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.11.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.10-4.8-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.10-4.8
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.10.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.9-4.8-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.9-4.8
by Serilum on Oct 09, 2026
Download
<p>(1.21.9 Forge) Fixed incorrect remnant files included in the mod jar.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.9-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.9-4.7
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.9.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.8-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.8-4.7
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.8.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.7-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.7-4.7
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.7.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.6-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.6-4.7
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.6.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.5-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.5-4.7
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.5.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.4-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.4-4.7
by Serilum on Oct 09, 2026
Download
<p>(Forge & Neo) Removed redundant event register annotations.<br />- This fixes events loading when they shouldn't.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.1-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.1-4.7
by Serilum on Oct 09, 2026
Download
<p>(Forge & Neo) Removed redundant event register annotations.<br />- This fixes events loading when they shouldn't.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.20.1-4.7-fabric+forge+neo] [Fabric/Forge/Neo] 1.20.1-4.7
by Serilum on Oct 09, 2026
Download
<p>(Forge & Neo) Removed redundant event register annotations.<br />- This fixes events loading when they shouldn't.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.4-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.4-4.6
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.4.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.3-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.3-4.6
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.3.<br />- Once again compatible with Fabric, Forge and NeoForge!</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.2-4.6-fabric+neo] [Fabric/Neo] 1.21.2-4.6
by Serilum on Oct 09, 2026
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<p>Updated mod to Minecraft version 1.21.2.<br />- Without Forge for now, support will be added once they update.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.1-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.1-4.6
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.1.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.0-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.0-4.6
by Serilum on Oct 09, 2026
Download
<p>Added Bundle support. The mod can now be enabled/disabled via bundle configs.<br />(NeoForge) Fixed the in-game config screen not working correctly.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.20.6-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.20.6-4.6
by Serilum on Oct 09, 2026
Download
<p>Added Bundle support. The mod can now be enabled/disabled via bundle configs.<br />(NeoForge) Fixed the in-game config screen not working correctly.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.20.1-4.6-fabric+forge+neo] [Fabric/Forge/Neo] 1.20.1-4.6
by Serilum on Oct 09, 2026
Download
<p>Added Bundle support. The mod can now be enabled/disabled via bundle configs.<br />(NeoForge) Fixed the in-game config screen not working correctly.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.21.0-4.5-fabric+forge+neo] [Fabric/Forge/Neo] 1.21.0-4.5
by Serilum on Oct 09, 2026
Download
<p>Updated mod to Minecraft version 1.21.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
[1.20.4-4.5-fabric+forge+neo] [Fabric/Forge/Neo] 1.20.4-4.5
by Serilum on Oct 09, 2026
Download
<p>(1.20.4 Neo) Fixed an incorrect mixin file reference.</p><p>The complete changelog with previous versions can be found at: <br> <a href="https://serilum.com/mods?changelog=difficulty-lock" target="_blank">https://serilum.com/mods?changelog=difficulty-lock</a></p>
