On sale at Indiegala for about $2 right now. It's $30 at Steam. Looks like a pretty good remake. https://www.indiegala.com/?clickid=woXTlCSB0RtbxoYWAJWcc2bmUkSx1n1xR0:d140
Decent came bundled with my PS1. I played it all the way through for some reason... I felt it had no purpose to it. There was no sense of achievement at the end. The game insists upon itself. So with that being my review, I interpreted the trailer to be a spoof mocking a shitty game.
Descent sucked, but the Freespace spinoffs are some of the best games ever made, especially Freespace 2. Freespace 2 has Half-Life 2 or Ocarina of Time level quality. If you haven't played it, you really should. It's the best space combat sim of all time, and easily among the five greatest games ever made. The space battles are epic. The voice acting is epic. The graphics were years ahead of their time. It's a legit 10/10 that is perfect in every way.