
Modrinth · Minecraft mod
KotlinLangForge
Provides a Kotlin language adapter for Forge and Neoforge
Quick answer
Which KotlinLangForge release should I use?
KotlinLangForge 2.10.4-k2.2.10-2.0+forge targets 1.17.1, 1.18.2, 1.19.2 with Forge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is KotlinLangForge required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does KotlinLangForge 2.10.4-k2.2.10-2.0+forge need?
2.10.4-k2.2.10-2.0+forge. 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 KotlinLangForge without breaking your instance.
Built for KotlinLangForge 2.10.4-k2.2.10-2.0+forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 2.10.4-k2.2.10-2.0+forge. It targets 1.17.1, 1.18.2, 1.19.2 with Forge; 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
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 2.10.4-k2.2.10-2.0+forge. It opens that exact file at the source.
About this project
What does KotlinLangForge add?
KotlinLangForge
Provides a Kotlin language adapter for Forge and Neoforge
This mod adds a language adapter for Kotlin and provides multiple libraries.
Developer usage
To add your language adapter to your mod, add the following lines to your
(neoforge.)mods.toml.
neoforge.mods.toml
modLoader = "klf"
loaderVersion = "[1,)"
Now you can init your mod like any other.
Just make sure your @Mod class is either an object or a class with a public constructor.
The constructor can take the following four arguments (they should never duplicate):
- IEventBus
- ModContainer
- KotlinModContainer
- Dist
If you want to implement the libraries in your mod, import the following dependency,
matching the language provider version, your loader and the (latest) version of Kotlin.
Versioning
The "language provider version" is a version only provided by KotlinLangForge.
This format is not used by Forge or NeoForge and only serves as a simple differentiation variable between the different
language provider implementations over the course of the versions of Minecraft.
| version of Minecraft | language provider version | supported loaders |
|---|---|---|
| 1.16.5 | 1.0 | Forge |
| 1.17.1 - 1.20.4 | 2.0 | Forge, NeoForge |
| 1.20.5 - 1.21.8 | 3.0 | NeoForge |
| 1.21.9 - 26.x | 3.1 | NeoForge |
build.gradle.kts
repositories {
maven("https://repo.nyon.dev/releases")
}
dependencies {
implementation("dev.nyon:KotlinLangForge:2.12.2-k2.4.10-$lpVersion+$loader")
}
For lp: <=3.0, you will have to use modImplementation.
Events
To use automatic event listener registration, the @EventBusSubscriber annotation has to be added on the class/file.
Klf then will automatically find all methods that have events in their parameters and will determine which event bus to
use.
Additionally, you can annotate a method with @SubscribeEvent to adjust the listener's parameters.
Note for Forge developers: Private event listeners cannot be processed on Forge and will result in a crash!
Mod Bus: The mod bus is available via the top-level declaration dev.nyon.klf.MOD_BUS.
Included Libraries
- org.jetbrains.kotlin:kotlin-stdlib:2.4.10
- org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.4.10
- org.jetbrains.kotlin:kotlin-stdlib-jdk7:2.4.10
- org.jetbrains.kotlin:kotlin-reflect:2.4.10
- org.jetbrains.kotlinx:kotlinx-serialization-core:1.9.0
- org.jetbrains.kotlinx:kotlinx-serialization-json:1.9.0
- org.jetbrains.kotlinx:kotlinx-serialization-cbor:1.9.0
- org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2
- org.jetbrains.kotlinx:kotlinx-coroutines-jdk8:1.10.2
- org.jetbrains.kotlinx:kotlinx-datetime:0.7.1-0.6.x-compat
- org.jetbrains.kotlinx:kotlinx-io-core:0.8.0
- org.jetbrains.kotlinx:kotlinx-io-bytestring:0.8.0
- org.jetbrains.kotlinx:atomicfu:0.29.0
Other
If you need help with any of my mods, just join my discord server.
Project description from Modrinth.
Pick your setup
KotlinLangForge by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.2
1 loader build1.21.1
1 loader build1.21
1 loader build1.20.6
1 loader build1.20.5
1 loader build1.20.4
2 loader buildsShowing the newest 12 of 19 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
KotlinLangForge versions and loaders
2.10.4-k2.2.10-2.0+forge
KotlinLangForge-2.10.4-k2.2.10-2.0+forge.jar
14 Aug 2025
2.10.3-k2.2.0-3.0+neoforge
KotlinLangForge-2.10.3-k2.2.0-3.0+neoforge.jar
31 Jul 2025
2.10.3-k2.2.0-2.0+neoforge
KotlinLangForge-2.10.3-k2.2.0-2.0+neoforge.jar
31 Jul 2025
2.10.3-k2.2.0-2.0+forge
KotlinLangForge-2.10.3-k2.2.0-2.0+forge.jar
31 Jul 2025
2.10.1-k2.2.0-3.0+neoforge
KotlinLangForge-2.10.1-k2.2.0-3.0+neoforge.jar
29 Jul 2025
Looking for an older file? The official Modrinth project page is in Resources.