GBM
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth
Go Minecraft Bridge
Go Minecraft Bridge hosts plugins written in Go in both Minecraft server and client processes. The Minecraft-facing code stays in Java, while plugin logic receives immutable snapshots/events and returns actions or named system calls.
The shared code is built as two version-specific Fabric artifacts:
| Minecraft | Java | Loader | Fabric API | Cloth Config | Mod Menu |
|---|---|---|---|---|---|
1.21.1 |
21 | 0.16.14 |
0.116.14+1.21.1 |
15.0.140 |
11.0.3 |
26.1.2 |
25 | 0.19.3 |
0.149.1+26.1.2 |
26.1.154 |
18.0.0 |
Architectury Loom drives the portable 1.21.1 target, with a small source overlay for Minecraft API differences. The unobfuscated 26.1.2 target uses Fabric Loom because Architectury Loom currently requires a mappings artifact that this Minecraft distribution does not publish. Architectury portability still produces one JAR per Minecraft ABI; it does not make one universal JAR.
The current MVP also targets:
- Go 1.24 or newer;
- native Go plugins built with
-buildmode=c-shared; - initialization, server/client tick, chat, death, system-call-result, and deinitialization callbacks;
- entity snapshots and explicit subscriptions to block positions;
- chat broadcast/direct-message actions;
- extensible namespaced system calls;
- capture of Go
stdout,stderr, and the standardlogpackage; - FlatBuffers tick snapshots (ABI v2), while control-plane messages remain JSON;
- a Cloth Config management screen exposed through Mod Menu.
The backend interface is deliberately independent from Fabric and native FFI so that a WASI/WASM backend can implement the same protocol later.
The server runtime is also packaged as one Paper plugin compatible with Paper and Purpur. Its Bukkit-facing code is compiled during every build against this API matrix:
| Server | Paper API used for verification | Java runtime |
|---|---|---|
Paper/Purpur 1.21.1 |
1.21.1-R0.1-SNAPSHOT |
21+ |
Paper/Purpur 1.21.11 |
1.21.11-R0.1-SNAPSHOT |
21+ |
Paper/Purpur 26.1 |
26.1.2.build.74-stable |
25+ |
The Paper API preserves the Bukkit surface used by the bridge, so these targets share one Java 21 bytecode JAR. Purpur accepts it directly because Purpur is a Paper-compatible server implementation.
Using
Visit source github to check
Roadmap
- Adding screen render implementation
- More systemcalls and usability
- Event system with registration
- All-in-one JAR file for client
- Maybe some more...
Code is licenced under MIT Licence.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as gbm-1.21.1-0.2.0.jar — drop this file into the mods folder
- Download size: 395 KB
- Download link checked 14 Oct 2026 — working
These come from our own check of the pack file, not from the source page.