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DeltaMUD is a multi-user dungeon (MUD) gaming server based on CircleMUD which has been enhanced with many programming additions and SQL support. The software now includes many memory and stability enhancements, as well as many additional gameplay options
The ElysianFields project is a project designed to build the ultimate interactive environment. It is starting off from the perspective of a MUD, but will hopefully evolve into so much more.
Moebius is a mud server, written in python using (currently) MySQL as a back-end. It's design goals are to be extensible without taking the engine down, to be distributable via the database, and to allow a complete python coding/learning env online. It
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Massively Multiplayer Space Trading and Combat game. This is an online strategy game, not a 3D space sim. Incorporating ideas from games such as Stars!, SE3, MOO, Tradewars, MUD/MOOs, Dune II, SimCity.
MUDAid is a graphical MUD client for Linux. It will support aliases, actions, scripting, speedwalking, an online equipment editor, and just about anything else the hardcore MUDder could want.
Noman's Land is (or rather will be) a TEXT-BASED real-time multi-user networked strategy game (not necessarily with a computer enemy), where players can log on and off dynamically.
Nautix is a 3D multiplayer game. You are a citizen in one of its worlds, spending your time with the construction of buildings and fighting against enemies.
Note: There is a design change from 0.2.0 to 0.2.x
A virtual reality (VR) system for the Internet based on a secure distributed object system. ADR has been renamed and moved: please see new site interreality.org
MudMaker is a multi-user dungeon (MUD) game engine written in Python.
It has some loose influences from diku MUD and derivatives. But while diku et al are combat-battle oriented, mudmaker is more social and quest oriented.
Kosmos Online is a free, open-source, online RPG creation kit which, when complete, will allow you to make your own online RPGs like Ultima Online and Everquest, and to run them, given a Linux box with a cablemodem connection.
LambdaMOO is a network-accessible, multi-user, programmable, interactive system well-suited to the construction of text-based adventure games, conferencing systems, and other collaborative software.
JMud is a MUD server written in Java(TM) from scratch.
Portuguese (Brazilian) version is available right now.
Multi-lingual support is in progress for Spanish and English.
A massively multiplayer (MMP) RPG written in Java. Ad Infinitum (or ADI) will use XML-RPC for remote communication and will be fully extensible/customizable through XML.
Project Elemental Shattering (ES) is a role-playing game that has been in the design phase for many years. Its first incarnation is this MUD engine. A successful MUD project will lead to the inevitable graphical MMORPG!
The goal of this project is to develop a light and efficient yet feature-rich Multi-User Dungeon engine, which is easy to customize. It will be written in the new object-oriented PHP5 language.