I'm very interested in trying out the game, unfortunately the demo doesn't work for me.
I'm running Fedora 8 with the appropriate nvidia drivers. Other glx programs run fine.
When I run the demo, a small blank window appears with the title of "Launch Menu"
Nothing else happens besides a console message about the sound driver being set to default.
Running strace I see a constant loop of
--- SIGALRM (Alarm clock) @ 0 (0) ---
sigreturn() = ? (mask now [])
gettimeofday({1200169756, 7922}, NULL) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [],

rt_sigaction(SIGCHLD, NULL, {SIG_DFL},

rt_sigprocmask(SIG_SETMASK, [], NULL,

nanosleep({1, 0}, 0xbff92af8) = ? ERESTART_RESTARTBLOCK (To be restarted)
which I guess is probably just the event loop.
I'm happy to provide more information.
Mark