Unity Game Engine

A universal 3D game engine designed to be portable, powerful, flexible, and easily extendable through an extensive plugin system.

PaulRPG: A free role playing game engine, to enable people to create free 'Final Fantasy' style games. The data file formats are reasonably cross-platform supportable, they would just need an interpreter for the different platforms.

Pipmak is a cross-platform game engine and authoring environment for point-and-click adventure games in the style of the Myst series. It supports panoramic nodes and uses Lua for scripting.


Platforms: Windows, Mac, BSD, Linux

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


Platforms: Windows, Mac, Linux

The DXGame Engine is a 2D game engine for Visual Basic that allows even novice programmers to quickly get a project up and running. Features include easy sprite movement, explosions, particle engine, tilemaps, alpha, rotation, scaling, and more! Create anything from simple point and click games...


Platforms: Windows

This is a game engine that helps game developer to produce game easier.It is writen in C++ and all of the functions are fixed into classes as the engine is designed in the method of Object-Oriented.


Platforms: Windows, Mac, Linux

Ng is a 100% Java Roguelike game engine that supports single and massive multiplayer games. SimpleGame is a prototype game that demonstrates most features of the engine and is included in all releases of Ng.


Platforms: Windows, Mac, Solaris, Linux

K3dEngine is open source game engine for creating Linux and Win32 games. Graphics engine running in OpenGL.


Platforms: *nix

The MudXS project exists to create a stable, multi-threaded and distributed MUD/MOO/MUSH game engine in OO with C++. Design goals include SQL backends, powerful scripting engine, and plugin worlds. Web administration frontend and custom client possible.


Platforms: Mac, BSD, Linux

A game engine for running Origin's 'Ultima 6' and 'Ultima Worlds of Adventure' games on modern operating systems.


Platforms: Windows, Mac, BSD, Linux

Kambi VRML game engine is a free/open-source 3D (game) engine. The engine is written in clean Object Pascal code, and we have an excellent support for the VRML / X3D 3D data (although other 3D model formats are also supported). See here for detailed documentation and downloads for developers.


Platforms: Mac

A multiplatform game engine for interactive fiction experiences. It makes use of JLayer API, available at http://www.javazoom.net/javalayer/javalayer.html


Platforms: Windows, Mac, Linux

The OpenRTSS project aims at producing a free game engine for making 'Real-Time Strategy Shooters'. The engine is written using Unity for simplicity and fast development.


Platforms: Windows, Mac

Framework to implement board and card games. Typical game elements are offered by this library, so developers just care on the essential aspects that differ. Games created with tjger are also hosted (Four wins, Oasch, Schnapsen, Trap the Wizard, etc.).


Platforms: Windows, Mac, Linux

An opensource 3d game engine using OpenGL. Fast easy to use with all of the latest gimmicks.


Platforms: Windows, Mac, Linux

Magic country: War of Duboloms - game developed on Blender Game Engine


Platforms: Windows, Mac, BSD, Solaris, Linux

Zeph3D is the Quake 2-based game engine we (EbertSoft Technologies) are developing for use in our upcoming FPS game title, 'Zephyr,' and is also slated for use in 2 other future titles.


Platforms: Windows, Mac, BSD, Linux

GemRB (Game engine made with pre-Rendered Background) is a portable open-source implementation of Bioware's Infinity Engine. It was written to support pseudo-3D role playing games based on the Dungeons & Dragons ruleset (Baldur's Gate and Icewind Dale series, Planescape: Torment). It should run...


Platforms: Windows, Mac, BSD, Linux

A very high level 2d tile grid based game engine written in Python and PyGame. It is intended to make programming 2d tile grid based games much easier, especially for novices, while retaining the flexibility required by more experienced programmers.


Platforms: Windows, Mac, Linux

Orx is a portable, lightweight, plugin-based, data-driven and extremely easy to use 2D-oriented game engine. As orx is data driven, it allows users to create games with a small number of lines of code and reduces drastically the development time.


Platforms: Windows, Mac, Linux