Game Maker Engine Fighter

Doomsday Engine is a 3D-graphics enhanced game engine for Doom, Heretic, and Hexen. The Doomsday Engine is an enhanced Doom source port, based on the source code of id Softwares Doom and Raven Softwares Heretic and Hexen. The purpose of the project is to create versions of Doom, Heretic and... Platforms: *nix

IRE - The IT-HE RPG Engine is a 2d role-playing game engine similar to that used by Ultima 6. IRE is an attempt to create a cross-platform computer role-playing-game engine similar to Ultima 6 but with more modern features such as rooftops, special effects and Ogg-vorbis music. The engine... Platforms: *nix

Drome Engine is a 3D game engine thats written in C++ and uses OpenGL for graphics rendering. Its currently under constant development; the main focus at this time is to improve and stabilize the application programming interface (API).. Platforms: *nix

Eclipse is a set of C++ classes designed to give beginner developers a head start in developing their first games as well as more experienced developers who dont want to have to write code for mundane tasks like fonts, sprites, and image loading. Eclipse 2D Game Engine provides bitmap fonts,... Platforms: *nix

Fuzz Engine is an SDL/Mono-based 2D game engine that loads its games from XML so that anyone with a simple text editor can produce their own high-performance games in minutes. Known problems: the platform game system is still pretty flaky.. Get Fuzz at SourceForge.net. Fast, secure and free... Platforms: *nix

The Cog Engine Project project consists of an online game authoring system. The Cog Engine Project is a software suite aimed at simplifying the creation of video games. No prior programming experience is necessary. The projects goal is to make building a video game easy enough for a motivated... Platforms: *nix

Game engine focused on X3D. Rendering and processing of 3D models in X3D, VRML, Collada and other formats. Latest graphic effects including shadows, shaders, mirrors. Animation, collision detection, 3D sound. Also home of view3dscene - our full-featured VRML/X3D browser. And also home of various... Platforms: Windows, Mac, BSD, Linux

The Complete Roll Playing Game Engine is an engine that can be used to create roll playing games. It includes programs to build characters, monsters, and worlds. cRPGe currently uses the AD&D rules set. Platforms: Windows, Mac, Linux

3D game engine (more powerful redesign of the Cube engine) and FPS game Platforms: Windows, Mac, BSD, Linux

A moddable 2d platformer/side-scroller game engine. Due to the dynamism and abilities of Python all elements of the engine may be subclassed and extended to provide unlimited functionality to the developer. Platforms: Windows, Mac, Linux

The Freya Game Engine is a cross platform Java API for writing multiplayer turn based games. The engine produces XML turn descriptions based on XML command files and XML data dictionaries. Platforms: Windows, Mac, 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

The General Adventure Game Engine is a generic RPGAdventure game engine written in C++. Platforms: Windows, Mac, Linux

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

The MAD Project is an attempt to create a powerful, flexible game engine, which is specifically designed for graphical adventure games. 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

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. Platforms: Windows, Mac, Linux

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

Pyzzle is a cross-platform game engine for creating large-scale, 2D Myst-like adventure games. The engine supports 2D panoramas, features an intuitive design mode, and allows users to download content from the internet. Pyzzle is written using Pygame. Platforms: Windows, Mac, BSD, Linux