GoMud

Overview

GoMud is an open-source MUD (Multi-User Dungeon) game server and library, written in Go.

It includes a fully playable default world, and provides built-in tools to customize or create your own.

Playable online demo: http://www.gomud.net

• GoMud
• Overview
• Features
  • Screenshots
  • Web Based Admin Tools
  • ANSI Colors
  • Small Feature Demos
• Quick Install
• Setup
  • Requirements
  • Quick Start
• Connecting
• Common Server Commands
• Configuration
  • Config Files
  • Enable Server HTTPS Support
• User Support
• Development Notes
  • Contributor Guide
  • Build Commands
  • Env Vars
  • Why Go?

Features

Screenshots

Click below to see in-game screenshots of just a handful of features:

Web Based Admin Tools

There are comprehensive web based admin tools to help build your MUD in addition to the in-game commands. You can browse the admin in read-only mode here:

https://gomud.net/admin/

ANSI Colors

Colorization is handled through extensive use of my github.com/GoMudEngine/ansitags library.

Small Feature Demos

• Web Admin Tool
• Web Map Editor
• Auto-complete input
• In-game maps
• Quests / Quest Progress
• Lockpicking
• Hired Mercs
• TinyMap (okay not much of a "feature")
• 256 Color/xterm
• Customizable Prompts
• Mob/NPC Scripting
• Room Scripting
• Kill Stats
• Searchable Inventory
• Day/Night Cycles
• Web Socket "Virtual Terminal"
• Alternate Characters

Quick Install

The quickest way to get GoMud running. The script installs Go and Git if needed, clones the repo, and builds the server binary.

Linux / macOS:

curl -fsSL https://raw.githubusercontent.com/GoMudEngine/GoMud/master/scripts/install.sh | sh

Windows (PowerShell):

irm https://raw.githubusercontent.com/GoMudEngine/GoMud/master/scripts/install.ps1 | iex

Both scripts install GoMud to ~/GoMud by default. Set the GOMUD_DIR environment variable before running to choose a different location.

Setup

Requirements

• go 1.24 or newer
• Optional: docker for container builds/test/runs

Quick Start

In a Terminal, run the following commands:

git clone https://github.com/GoMudEngine/GoMud.git
cd GoMud

make reset-admin-pw   # set a new default admin password
make run              # runs GoMud server using `go`

make docker-run       # Alternatively, run the GoMud server using `docker`

Then open your browser to: http://localhost

Connecting

When the GoMud server is running, you can connect it via the Terminal, or with a web browser.

• Telnet: localhost:33333 or localhost:44444

• Local-only telnet port: 127.0.0.1:9999

• Web client: http://localhost/webclient

• Web admin: http://localhost/admin/

Important: Run make reset-admin-pw, otherwise your default world will launch with these credentials:

• Username: admin
• Password: password

Common Server Commands

In a Terminal, run one of the following commands:

make run          # runs GoMud using the `go` framework

make build        # creates a executable binary of GoMud at `./go-mud-server`

make run-docker   # runs GoMud in a container using Docker Compose

make help         # shows all available `make` command options

Configuration

Config Files

GoMud loads configuration in layers so you can keep your own world-specific changes separate from the bundled defaults:

_datafiles/config.yaml
  -> FilePaths.DataFiles (defaults to _datafiles/world/default)
      -> {DataFiles}/config-overrides.yaml
          -> environment variables such as CONFIG_PATH, LOG_PATH, LOG_LEVEL, LOG_NOCOLOR

• _datafiles/config.yaml is the bundled base config that ships with the repo, and shouldn't be edited or changed.
• FilePaths.DataFiles points at the active world data directory. By default that is _datafiles/world/default.
• {DataFiles}/config-overrides.yaml is the normal place to save local overrides for a world.

• CONFIG_PATH=/path/to/config.yaml can point GoMud at a different override file when you want to keep it outside the repo or maintain separate deploy-specific settings.

• For upgrades, treat _datafiles/config.yaml as a reference file, not your day-to-day edit target. = Keep your custom changes in config-overrides.yaml or a separate file selected with CONFIG_PATH so pulling new code does not overwrite your local settings.

Enable Server HTTPS Support

GoMud can serve HTTPS when you provide a certificate and private key, or can be automated using LetsEncrypt provisioning.

For a guided HTTPS setup process, run:

make https-setup

When the admin interface is enabled, /admin/https/ shows the current HTTPS mode, the checks GoMud ran, and the next steps needed to finish setup.

User Support

If you have comments, questions, suggestions (don't be shy, your questions or requests might help others too):

• Github Discussions

• Discord Server

• Community Guides

Development Notes

Contributor Guide

Interested in contributing? Check out our CONTRIBUTING.md to learn about the process.

Build Commands

Env Vars

When running, several environment variables can be set to alter behaviors of the mud:

Why Go?

Why not?

Go provides a number of practical benefits:

• Compatible: Easily builds across platforms and CPU architectures (Windows, Linux, MacOS, etc).
• Fast: Execution and build times are quick, and GoMud builds in just a couple of seconds.
• Opinionated: Consistent style/patterns make it easy to jump into any Go project.
• Modern: A relatively new language without decades of accumulated baggage.
• Upgradable: Strong backward compatibility makes version upgrades simple and low-risk.
• Statically linked: Built binaries have no dependency headaches.
• No central registries: Dependencies are pulled directly from source repositories.
• Concurrent: Concurrency is built into the language itself, not bolted on via external libraries.