Reviving this ancient topic because I've been looking into this game again recently, trying to pick up where denzquix left off. I might eventually start looking into the map data format, but it's pretty hard and I don't have any reverse engineering experience, but mostly I'm focused on getting more stuff for the TCRF article.
There's actually quite a lot of interesting stuff I've found out. One thing I'm doing right now is just going through all the exported textures and visually checking to see which ones are unused. I've also done a dig into old game magazines and found some interesting differences in the pre-release copies they used to make screenshots. Right now I'm just banking it up until I've finished going through all of it.
Also, I found a Windows 95 screensaver and extracted the assets from it:
https://archive.org/details/NormalityWin95Screensaver By the way, I guess denzquix probably doesn't check this forum anymore, but if anyone is interested he's actually like one of the more prolific uploaders on the Internet Archive and has a *ton* of stuff archived:
https://archive.org/details/@denzquix