Crystal Space is a 3D engine that is free and can be easily transported.
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.
Version 1.2.1: N/A