I understand that playing Quake on Linux requires three things:
- An engine
- A launcher
- The data files (either shareware or registered)
The first two have GPL packages available and are as simple to install on Ubuntu as clicking a link in the Software Center. The third is usually obtained by downloading the shareware version or by taking the data files from an original CD.
Can the Steam version of Quake act as a substitute for a CD so that I can play the registered version? If so, is the process documented anywhere? Bonus points if your answer speaks to all of the games in the franchise available on Steam since I'd love to try them all at some point.