ModsJava
Hollow Core
Kotlin-based modding library. Free Minecraft Java mod for 1.19, 1.19.1, 1.19.2.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
HollowCore is a minecraft modding library by HollowHorizon. It is an easy to use and powerful library for easier creation of minecraft mods for Fabric, Forge and NeoForge.
Features
Multi versional
HollowCore is now running on 1.21, 1.20.1 and 1.19.2 (WIP) by the Forge, Fabric and NeoForge loaders.
Integration with ModLoaders
- Universal Registration system to register blocks, items, block entities, etc. using kotlin delegates.
- Universal Packet system with automatic serialization and registration using annotations.
- Universal Capabilities system to storing nbt in entities, block entities and worlds.
- Universal EventBus system for all modloaders and basic events.
Easier development
- Automatic models generation for blocks and items using embed resourcepack.
- NBT serialization and deserialization of any objects using Kotlinx.Serialization.
- Toml Config system based on KotlinX Serialization.
- Automatic sounds.json generation.
Graphics
- ImGui based framework: basic elements, items, entities, containers, slots, etc.
- Async GLTF model loader with skeletal animations, skinning, morph targets, PBR materials with Iris/Oculus support.
- Effekseer particles support.
- Gif textures.
- MP3, OGG, WAV Sound formats support.
Verified by MCModsHub
- Ships as hc-1.19.2-1.6.3.jar — drop this file into the mods folder
- Download size: 29.1 MB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.