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Helen is an adventure game engine written in Java 6, designed to support multiple users. Where Helen attempts to be unique is enabling users with powerful extensibility without a grammar-heavy language (thanks to Groovy).
!!!NOTE: THIS PROJECT HAS MOVED TO GITHUB!!! RingMUD is an extensible MUD (multi-user dungeon) engine and utility set that draws inspiration from popular tabletop RPG systems and adds a dash or two of its own flavor.
Sloth Online RPG is a 2D fully graphical online game engine. It features rich tile based maps with layers, fully customizable characters and a completely interactive environment. Also included are resources such as map editors, sprites, tiles, and more.
Eternal Realms is a game engine written in Java that seeks to create worlds where the users craft their own universe. Eternal Realm derivatives are massively multiplayer roleplaying games, where a person guides their player down any path they desire.
Cynia is a MUD (Multi User Domain) engine. Primarily used for online gaming, this project will aim to provide a quick, flexible and easily maintainable environment to build Multi User Domains for free online play.
JAMIE (JAva Mud Implementing Engine) is a text-only, telnet-based MUD server written in Java. It provides an original experience-less and level-less job-based system that can be expanded by those who wish to run their own MUD.
This is a 2d tile-based RPG (Role Playing Game) engine targetted at the J2ME / MIDP application platforms (PDAs, java-enabled cellphones) but is also cabable of running on a J2SE enabled platform (either applet or stand alone java app).
Black Rain, a Java-based RPG using a hex-tiled game map, with many different items available in-game. Black Rain will use an unique object-modification and combination engine to allow objects in the game to be combined, changed, and upgraded.
Tokratan is an open source free multiplayer graphical online role playing game, set in a fantasy universe. In this phase of development we focus on the engine and not yet on game content. Server and client are writen in Java, a MySQL database is used.
PAiN Mud codebase is a new MUD codebase written in Java. It provides general purpose persistence engine (PAiN DB) and ability of dynamic code reloading.
TNRK is a rpg engine for the PalmOS platform. Travel with your own character through endless worlds, lots of modules, unending stories,... while getting to or out of work, train, bus, etc...
Multi-User Character Kingdom (MUCK) engine and client providing a first person view point 3D-world which can be created by users, and which uses a system to provide quick gameplay by slowly downloading Objects/Textures over time once in the world.
MUD engine, enables interaction with text-only, XML clients. Has on-line/in-game world creation capability. WotC's OGL SRD and Java based, capable of scalable worlds across distributed servers. In short a next generation MMORPG engine.
Pangaea will be a robust and feature filled game engine built using Allegro (http://alleg.sourceforge.net) It will be similar to Final Fantasy 1-3, etc., complete with map editor/world builder.
XMUD is a MMORPG implementation in Java. Players can extend the system by creating new objects. The game provides a 3D engine written in Java3D, Persistent state management, synchronization and networking subsystems. Compatible with NWN modules.
MEKMUD is a 100% java-written mud ensuring full portability. Its main goal is to implement a lot of simple scripts to make it easy customizable to various settings. A Legacy of Kain styled world based on this engine is also in the planning stages and will
The Euphoric Ataxia project is an attempt to create a fast, reliable, secure and stable MUD (multi-user dungeon) server and engine entirely in the Java programming language in order to ensure portability.
judge - an OO mud (multi user dungeon) engine based on a client/server architecture and written entirely in java. This d20 based game engine will eventually make use of JINI to allow certain functions to be performed locally or by other dedicated servers
Originally a fork of Legend of Mazzeroth, this project aims to create an engine rather than a game. It aims to be a 2D MMORPG engine, fit for easy customization through Ruby. It also features an edit of Tiled, the map editor made at www.mapeditor.org
Tearsol is a server and client for an MMO service. With incomplete but innovative features like: C++ server to java client parsing, background asset streaming, dead reckoning and full X-platform compatability. http://www.export-games.com