The CGFX files all end with the extension .cgx, the 3D Koala ends with the extension .3dk. 3D Koala is a more primitive format, whose functionality with greater flexibility is built into the CGFX format. Nonetheless, C64 OS includes datatype loaders for both CGFX and 3D Koala.

3D Koala is used for matrix images, of exactly 5 rows by 40 columns, in which every frame is in the Koala (MultiColor bitmap) format. The image included in this sample pack is based upon a 3D model of a teapot.

CGFX is a container format which supports variable matrix sizes, in multiple frame formats, sizes and video modes. CGFX can be used for 3D models, look-around-scenes, panoramas, and short animations. It can also be used to wrap standard still images in HiRes and MultiColor bitmap modes, Standard, MultiColor and Extended Background character modes, as well as providing options for interlacing and other common CPU-assisted non-standard video modes.

This sample pack includes two panoramas, an animation of a continuously rotating planet Earth, an animation sequence of the USS Enterprise (NCC-1701-D) jumping to warp, a classic animated meme of Dr. (Bones) McCoy and Captain Kirk, plus a 3D model of black Porsche.

All of these require the Image Viewer Application, datatype loaders and updated gfx.lib in C64 OS v1.04 or greater.