The WorldForge project is the original open-source MMORPG project, dating back to 1997.
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There are many alternatives to Unity for Linux if you are looking for a replacement. The best Linux alternative is Godot Engine, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Unity and loads of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Unity are Unreal Engine, GDevelop, Candlestick and Defold Engine.
The WorldForge project is the original open-source MMORPG project, dating back to 1997.




Reality Factory 2 is a next-generation game authoring suite. It combines a flexible, fully scripted game development environment powered by Python with the Ogre3D engine, and supports all major desktop operating systems.
Open RPG Maker is a free and open source clone of features from the RPG Maker series (i.e. rpgmaker200, rpgmaker2003, rpgmakerxp), as well as many other features. All of the data files are in XML format and are easily editable with any text editor.




AresEd is a high-level and fully featured 3D game creation suite. It is Free and Open Source. When it is finished you will be able to make full 3D games without writing any code (although a fallback to the python scripting language will be provided).

Amulet is a free Lua-based audio/visual toolkit suitable for small games and experimentation. It runs on Windows, Mac, Linux, HTML5 and iOS.
Limon is a multi platform 3D game engine mainly focusing on first person games. Focus of its development is ease of use and ease of study. It has builtin editor for maps, animations and GUIs.
MAGE stands for MAKE A GAME EXPERIENCE
The goal for MAGE is to make it as easy as possible for people to create their own 3D universes, adventures and stories. PLAY WHILE YOU CREATE!.
Build your own 3D MMORPG with easy visual editors. Custom Classes, Items, Quests, and Combat, right out of the box. Online instantly, no manual server management required.
