Open Source Role-Playing Games (RPG)

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, open-source, cooperative multi-player RPG and adventure game. Since its initial release, Crossfire has grown to encompass over 150 monsters, 3000 areas to explore, an elaborate magic system, 13 races, 15 character classes, and many powerful artifacts scattered far and wide. Set in a fantastical medieval world, it blends the style of Gauntlet, NetHack, Moria, and Angband.

Sourceforge is discontinued, now on Github: https://github.com/Dawn-of-Light Framework for interacting with the Dark Age of Camelot client (Mythic, EA/Mythic, BioWare, Broadsword licensed). Also know as a Dark Age of Camelot ( DAoC ) Server Emulator. Give life to your own world ! Please consider playing live: http://www.darkageofcamelot.com

This project has been moved to github.com. You can find the new project at: https://github.com/opentibia

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.

Argentum Online is an Open Source FREE 2D MMORPG, it has: guilds, magic, combat, animal taming, 21 skills, a huge world with towns and dungeons. Several races and professions. Client and server are distributed under Affero GPL v1.

English: Cover AO is an FREE 2D MMORPG Open Source based of Argentum Online (https://sourceforge.net/projects/morgoao/) Inside this fantasy free world, set in a medieval era. You are in charge of writing your own story. Where you can build, train, trade, conquer and interact in real time with the rest of the players in the world. Important: Client and server are distributed under Affero GPL v1. - Spanish: Cover AO es un MMORPG 2D GRATUITO de código abierto basado en Argentum Online (https://sourceforge.net/projects/morgoao/) Dentro de este mundo libre de fantasía, situado en una época medieval. Tú eres el encargado de escribir tu propia historia. Donde podrás construir, entrenar, comerciar, conquistar e interactuar en tiempo real con el resto de los jugadores del mundo. Importante: El cliente y el servidor se distribuyen bajo Affero GPL v1.

KildClient is a mud client using the GTK toolkit. Its main feature is the support of Perl scripting. Other standard features of mud clients (triggers, gags, macros, etc.) are also supported.

Legend of the Green Dragon is a remake of the old BBS game Legend of the Red Dragon (aka LoRD). All support for this game resides at http://dragonprime.net

HackNet is a multiplayer roguelike game, borrowing heavily from the style and gameplay of Hack and NetHack. Our goal is to keep the flavour of Hack intact, despite the gameplay changes required by allowing multiple players.

Home of the Ultima Offline eXperiment3 DevTeam Project. With uox3 you will be able to connect Ultima Online to an offline server on a local-LAN with your friends or serve on the internet with your own shard. Find us at irc.ipdn.org in the channel #uox.

Wograld is a 2d skill based MMORPG designed from the ground up to be focused on pvp and roleplay. It is everything Ultima Online should have been.

OpenSS13 is a open source BYOND game. It is a space station survival simulation written in DreamMaker.

FénixAO es un mod de Argentum Online, MMORPG gratuito de código abierto, que cuenta con numerosas innovaciones como un sistema de tiendas, subclases, nuevos mapas y objetos, además de todas las características que incluye el original Argentum Online.

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

Injection is a UOAssist Open Source Clone for UO Emulator servers. Players can arm/disarm, drink potions and perform other actions more easily. It is designed for playing on UO emulators and will not work with official shards. It can also be loaded as a

An open and free Tibia MMORPG server and programs to control it.

Fusion is a Ragnarok Online Server Emulator that is written in Delphi. Fusion is a fork off eWeiss and is succeeded by Prometheus.

Mordor - Resurrection is a remake of an old RPG game named Mordor - Depth of Dejenol created by MakeItSo Software. It is created in Delphi with the aid of Microsoft Access as Database environment.

Axis is the most comprehensive Admin/GM Tool for SphereServer.

SteamEngine is a new open-source UO server emulator coded in C#, which can read and run Sphere scripts. It`s domains are supposed to be extreme customizability even for non-programmers, and a clean and readable codebase. The project is now abandoned. The "intended for the public" phase ended long ago. The "OldCode" repository is that (if that still works). Then for a while we intended it for the UO shard moria.cz, but that didn't succeed either, and the shard is now defunct. The last commit of this phase is r904 in "SvnCode" repository. Lately I've using the codebase for experiments with in-memory transactions. First part is abandoning NANT for building and moving to VS 2015. That's done in r922. This is the last functional code. After that the transaction stuff is added which basically means the server is broken. Ultimately I've moved to GitHub, where the development may or may not continue. We'll see. This is a final goodbye.

WorldForge is a tool for worldbuilders. With WF they can edit the map for Ultima Online (UO). This enables admins of free shards to customize the appeance of their world.

YARE is an open source Ragnarok Online server coded in C. More information here: http://www.project-yare.org

Elysium Engine is a 2D MMORPG maker programmed in Visual Basic 6.