From the other thread

Speaking of demos, anyone remember the trailer for the game Secret of Vulcan Fury that was included in front of Interplay games, touting the voices of the original cast? So sad it was never released, considering it was deforest Kelley's last turn as McCoy. I wonder if the original audio tapes still exist and someone could turn it into a game...

Here's the trailer I remember

But also found this "footage" when looking for the trailer

There was much hullabaloo over the game being written by DC Fontana, and of course the entire original cast having laid down recordings. That said, if I recall correctly, they never even had a working version before Interplay folded.

As I mention above, wonder where those VR tracks went and if they could be rescued and turned into a game, radio play, etc. But I wouldn't be surprised if they've been lost to time or, if they still exist in someone's garage , aren't too degraded