MapSwitch

Fabric server mod for per-map world switching with separated player data, stats, advancements, and tab-list visibility.

32 Downloads

fabricmanagementutilityworldgen

Rent Server with this Mod

About this Mod

MapSwitch

MapSwitch is a Fabric server mod for multi-world gameplay with strict per-map player-data separation.

What It Does

Switch players between maps with:
- /mapswitch <map>
- /map switch <map>
Keeps map-specific player data isolated:
- inventory
- XP / health / hunger
- ender chest
- stats
- advancements
Supports map-based tab-list separation.
Shows active map hints in actionbar.

Folder Layout

Maps are read from the server root:
- ./maps/<map>/

Expected per-map folders:

playerdata/
stats/
advancements/
DIM-1/ (nether source)
DIM1/ (end source)
optional overworld region/, entities/, poi/

Notes

Built for Fabric + Minecraft 1.21.11.
Server-side focused mod.
Requires Fabric API.

Available Versions

MapSwitch 1.0.1release

MC 1.21.11fabric

March 27, 2026

MapSwitch 1.0.0release

MC 1.21.11fabric

March 27, 2026

How to Install MapSwitch on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "MapSwitch". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

MapSwitch server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is MapSwitch compatible with fabric?

MapSwitch officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with MapSwitch – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if MapSwitch consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.