Thank you.
Will I make more? Not sure. I think it would be fun to make an animation showing gameplay with these graphics (and maybe more-realistic audio). Most of what you see here also works in Blender's near-real-time renderer, and I even set up the animations for the shapes. If someone got a recording of the marble into Blender (which can't be that hard)—or more impressively, a multiplayer match with a bunch of players and item visibility data—I would probably be willing to do the rest. There are some interesting ways one might animate obtaining items. I actually did get a marble recording into Blender, but the speed and rotation were completely wrong.
As for the Frightfest stuff specifically, I fell in love with the aesthetic—even the more corny stuff, perhaps—and intended to make fancy renders of a few levels. I lost interest but I still want to use that aesthetic in some unrelated 3D scenes.
I figured I might even be able to use some of the textures. No idea what the Platinum Team would say about that, but reverse-searching for them with TinEye showed that some of them are mildly edited stock images. I was also
reminded
that several of them are from Constructor. That leaves the two simplistic noise textures (I did a quick and dirty AI image-to-image on the grass, for the record), and the tree bark which I can't find the origin of but isn't of much value anyway.