... it's turned into a fashion show for poofters.
But for the purest engine experience, displacement has no replacement. All other methods are simply attempts to artificially recreate the benefits of displacement.
I remember about 16 or so years ago we had a thing at the Bournemouth BIC called Alien Warfare based on the Alien films and you basically had to escape from the spaceship without getting caught and it was pretty scary i was about 14 at the time. This looks pretty awesome too...