Crystal Space

Crystal Space is an outstanding 3D Game Development Kit, which is free and portable and written in C. The software offers an extensive range of features, such as colored lighting, shader support, mipmapping, alpha transparency, procedural textures, particle systems, reflective surfaces, and more. It also supports 16-bit and 32-bit display, hierarchical transformations, physics plugin based on ODE, and is compatible with OpenGL and software renderer. Moreover, it offers full support for fonts via freetype.

The software has scripting options using Python, Perl, Java, and other languages. It is compatible with multiple platforms, including GNU/Linux, general Unix, Windows, Windows NT, and MacOS/X. You can optionally use OpenGL, SDL, X11 (Unix or GNU/Linux), SVGALIB (GNU/Linux), and assembler routines using NASM and MMX. Crystal Space is a large open source project that currently has about 700 people subscribed to the mailing list.

One of the key advantages of Crystal Space is its compatibility with a variety of hardware and software platforms. The software has been tested extensively and known to run on GNU/Linux, FreeBSD, Windows 9x/NT/ME/2000/XP, and MacOS/X. It is worth mentioning that the listed systems may not be fully supported.

Overall, Crystal Space is a robust, flexible, and feature-packed game development kit. It provides an excellent set of tools and libraries that enable game developers to create high-quality 3D games.