Py-Lepton is a high-performance, pluggable particle engine and API for Python. The engine is designed to be very flexible and does not rely on any other libraries directly. You can use it either with OpenGL (via pyglet or PyOpenGL), or with pygame by selecting the appropriate renderer. Examples are provided using pyglet and pygame. Note that this is in an alpha state, so expect the API to change somewhat in future releases.
Sauerbraten (a.k.a. Cube 2) is a free multiplayer/single player first person shooter, built as a major redesign of the Cube FPS. Much like the original Cube, the aim of this game is not necessarily to produce the most features and eye candy possible, but rather to allow map/geometry editing to be done dynamically in-game, to create fun gameplay and an elegant engine.
L3D is a 3D library for developing OpenGL applications under Linux. The library has a main display loop, and call-back functions similar to those in GLUT. It has a graphical console for output of information. The goal of this project is a library which is small and hopefully scalable.
psxsound.wad is a wad file for Doom or Doom2 which includes all the sounds from the Playstation and Doom64 editions. Combined with some dark, ambient soundtrack, this greatly enhances the atmosphere and gameplay. All sounds were sampled directly from a console running PSX Doom/Doom64 and downmixed to 11KHz 8 bit (Doom PC format) while preserving the maximum possible quality. It should work with any Doom port/version that supports external wad files. ID Software and Williams Entertainment are the original authors of these sounds.
wad2svg takes a level file for the computer game Doom, and draws a 2D map of the level as an SVG (Scalable Vector Graphic) file. This can then be edited and/or converted to a raster image using a suitable vector graphics programs. wad2svg can also draw the node tree of a Doom level, and is designed to be extended to draw other aspects of the level.
The Interreality project is a collection of Open Source, Free Software projects based on the Virtual Object System (VOS) platform. The goal is to develop a free and open platform for multi-user 3D virtual reality games, applications, and interactive, collaborative 3D virtual spaces. VOS is a powerful and generic network object framework designed to support a variety of high-performance applications. It is the basis for Ter'Angreal, a general-purpose browser application for entering and participating in 3D worlds.