Use game-data-packager to build and install the quake3-data
or quake3-demo-data package.

For quake3-data you will need at least baseq3/pak0.pk3 (479493658 bytes)
from a Quake III Arena CD or installation.
game-data-packager can download all other necessary files.

For quake3-demo-data (experimental) only downloadable files are required.
