Open Source Python Multi-User Dungeons (MUD) Games

Arianne is a multiplayer online engine to develop turn based and real time games, providing a simple way of creating the game server rules and clients like our MORPG Stendhal. Our engine Marauroa uses Java and SQL for hosting hundreds of players on a solo host. Stendhal is a fun friendly and free multiplayer online adventure game with a huge and rich world. With hundreds of NPCs and different quests, features like the Travel log and achievement system keep track of progress. Thousands of creatures are ready to fight, above and below ground, and as players level up they can compare themselves on a detailed stats website. The engine Marauroa provides a simple way of creating games on a portable and robust server architecture. Marauroa manages the client server communication and provides an object orientated view of the world for game developers. It handles database access in a transparent way to store player accounts, character progress and the state of the world

Crossfire is a free and open-source cooperative multiplayer graphical RPG and adventure game. Set in a medieval fantasy world, it combines real-time action with traditional role-playing mechanics inspired by games such as Gauntlet, NetHack, Moria, and Angband. Players can choose from 14 races and 16 character classes, develop skills and magic, worship gods, complete quests, discover powerful artifacts, and explore thousands of interconnected maps filled with monsters, dungeons, cities, and adventures. Crossfire has been continuously developed since 1992 and remains an actively maintained community project.

Alternative Lineage 2 Game Server written in Java.

Worldforge provides clients, servers, tools and protocol to allow for anyone to create and host their own virtual and online world.

A tool for Spellcrafters and their customers playing Mythic Entertainment's MMPORG, Dark Age of Camelot

Lyntin is a Python mud client based on Tintin but goes above and beyond Tintin allowing you to write modules in Python enhancing the client to suit your individual needs.

Spells and Stuff is a Python based web roleplaying system, that allows a DM(Dungeon Master) to create potentially unlimited graphical worlds and will allow multiple players to graphically explore them via a standard web browser.

A python based mud codebase currently in alpha stage. The main site for the project and the most up to date files can be found at kenai.com/projects/coppertwilight

Two programs for playing board games over the internet. A board viewer, where all clients see the same image with moveable tokens. And a chat client with calculator and dice roller.

Dream is an overhead graphical MUD, vaugely reminicent of older versions of Final Fantasy.

ErisMUD is a MUD/MOO engine and server written in Python and SQLite and supports many features: it has rooms, chat, NPCs, items, player creation, ANSI colors, etc. Internal commands take care of the development and maintenance.

The Fury² Game Creation System is a game development toolkit for the 32-bit Windows platform, designed to allow the creation of complex multimedia software and games with minimal unnecessary effort (i.e. reinventing the wheel.)

Papaya is a fully featured MUD client with features including ANSI colour, multiple simultaneous connections, proxy support, aliases, triggers and plugins. It uses the GTK widget set and runs on (at least) Linux, Windows, FreeBSD, Solaris and MacOSX.

A program written in Python, extending the remote administration of Sphereserver. Provides logging, input and output filtering, user ranks, secure communication and easy extendability. It`s experimentally using wxWindows or Tkinter GUI.

A codebase for the construction of 3d online virtual worlds. Includes everything you need to make your own multiplayer online roleplaying game. All game rules are contained in plugins which can be written in easy scripting languages such as Python.

A collection of useful tools that can be used to fetch data from Tibia (www.tibia.com) or OTS (http://sourceforge.net/projects/opentibia)

Wolfpack is a server-side Ultima Online MMORPG software. The project has started back in 1998 and has aquired both users and developers since then.

Aarit is a MUD playable via web browser and made in Python with twisted framework.

AUOE stands for Advanced Ultima Online Emulator. This project has the aim to build a highly customizable free opensource UO emulator. Our secondary goal is to build a highly customizable compatible Ultima Online client. Languages: C++/PHP/Perl/Python/XML

Project Angela is a family of ruleset modeling language (RML) interpreter components written in python. It is intended to easily enable RML support for a variety of different simulation engines, game engines and MMO frameworks.

An MMORPG using the Multiverse Platform (www.multiverse.net). This project includes game logic code and art assets. Note that the Multiverse server libraries itself is NOT open source.

Arnacaw Online is an open source 2D MMORPG in development. A traditional MMORPG with many extensions, features planned include dynamic player-built worlds, a stock market, auctions, and a player-driven glyph-based spell system.

Atrinik is Multiplayer Online Role Playing Game based on the code of Crossfire and Daimonin. Development is at https://launchpad.net/atrinik

The exciting and complex text-based online Battletech game as developed and actively used by Battletech 3030MUX and others.