Being doing some experiments with Flash and ActionScript I decided to program some 3d in Flash. Of course Flash was not designed to perform complex 3D calculations but I always liked computer graphic programming on different hardware and software platforms. So you can see the result of my work here:
3D cube in Flash (SWF, 3kb)
3d cube source code (ZIP archive, 16 kb)
In future I plan to improve this effect with lighting and shadowing.