BFRIS Ships!

“You can order your copy right now and have it shipped directly
to your door by going to the online ordering page.”

Svartalf writes:

You can order what is the first officially supported
shrink-wrapped game for Linux from their website, or download the
20MB demo.

It requires a Voodoo card for Mesa acceleration or one of the
Betas from XiG or MetroX to run. If you meet the hardware
requirements, Go download the thing and try it out.