About Legacy Bridge
From ModrinthConverts legacy Minecraft maps (1.0-1.12.2) to modern 1.21.10 - migrates command blocks, resource packs, and outdated block data automatically.
Legacy Bridge MC
### Full Legacy Map Conversion
Automatically converts legacy Minecraft maps (1.0-1.12.2) to 1.21.10. Handles command blocks, resource packs, block data values, and more — all in one mod.
Current Status: 🟡 70% of 1.12.2 maps should be fully compatible with 1.21.10
Decent 1.0 to 1.11.x map coverage
## Roadmap
🟡 1.12.x to 1.21.10 (Current Focus)
🟠 1.13.x to Latest Minecraft Release
🔴 1.12.x to 1.13.x
🔴 Every Other Version
## Instructions
## Preview
Highlights
From source dataGame versions
Built for Minecraft 1.21.10.
Loaders
Runs on Fabric.
Footprint
Rated a light load on a server.
Legacy Bridge 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
- 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
- 1.0.0 (beta), released 2026-03-16
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Fabric | 1.21.10 | 1.21.10 |
From 1 recorded build of Legacy Bridge.
Run Legacy Bridge 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 catalogMaps & scenarios
Custom maps, arenas and scenarios to play on.
Runs on your server
From source side supportModrinth lists Legacy Bridge as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- Fabric
- Runs on
- Serverrequired on the server
- Game versions
- 1.21.10
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-03Open ↗
- ✓AuthorGavin-S-Dev, as published on Modrinth
- ✓LicenseMITFree
