World map

The world map of RetroMC is located at https://world.retromc.org with an option to use 2 front-and-back-ends; map updates can take 24–48 hours for both.

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BlueMap

BlueMap is a renderer that creates 3D models of MC worlds, which can be viewed with a flat orthographic view or a first-person view.
Initially implemented in late September through early October of 2025.

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Overviewer

Overviewer
A static render of the world generated via Overviewer.
Information
Type	Command-line tool
Status	Unmaintained
Implementation	September 3rd, 2018

Overviewer is an unmaintained open-source command-line tool used to render the world map on https://world.retromc.org/overviewer.
Coded in C and Python, it reads the selected Minecraft save before rendering it.
Pull requests on its GitHub repository are no longer addressed.
On RetroMC, a modified version is used to render a map of the overworld and is compatible with JVillage.
It replaces the outdated 2D Dynmap plugin previously used on the server in September 2018.

Features

Some features may not be included in the base version.

• Displaying all signs placed through Markers -> All and searching for text in them
• Looking up village-claimed areas with JVillage integration, developed by

 floskater99

• Displaying more information about selected village and players

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  Username infobox that appears upon selecting a player's head.
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  Town claims viewed with Overviewer.

Known issues

Overviewer has many known issues that are being worked on by the RetroMC development team and should be fixed (hopefully soonTM). Below is a non-exhaustive list of these problems:

• Very high CPU and memory usage, causing the website to load very slowly on low-end devices
• Infrequent world updates
• Rare town claims updates
• Poorly designed user interface