i think trag must have been a us-only name, as i’m sure it was called hard edge in europe too.
i had a demo of akuji the heartless! it seems like there was a few occult-themed western-developed 3d action games on the ps1 about that time: akuji the heartless, nightmare creatures, soul reaver, and so on.
i played the akuji demo a lot, but even now i don’t think i’ve ever played the full game. i don’t think it ever got any kind of popularity, either, did it?