I haven't played this for a very very long time, but vaguely rememrber it being kind of clunky, although innovative in some aspects back then.
Does the digital version have technical improvements over the retail one? Thanks a lot!
edit: Fixed typos

I don't know if I missed something, but I could never get the CD-version to run on any machine with Win 7 or upwards. That should be one advantage of the GOG-version, hopefully. :D

Are there yet any positive reports of successfully running this on Win 7 x64?

Runs here on win7 x64

I'm afraid it doesn't work for me using win7 x64 with 16gb of RAM and an AMD 290x card. There's an APPCRASH in the 3dfx.exe. The game seems to come with Nglide 1.04. Have to try it with other wrappers later. But normally nglide does work finde for me.

Forcing the 3dfx.exe to use win98 compatibility mode fixed it for me, by the way. The downside is: the sound is now very distorted. Hmm...will have to experiment some more.

edit: Choosing Windos NT 4 compatibility seems to have fixed the sound issues. Hopefully this will help some of you, if you encounter the same problems

Post this solution on your thread for future reference! ;D

Windows 10 user here and I am thinking of buying it anyone with any problems on W10?

Windows 10 user here, too. As far I can see, it runs fine with D3D and with 3DFX it runs a little choppy.

Now, retail works well this way:

Install patches 1.2 and 1.3 (Both are problematic on a x64 system since the installers are 16 bit). For 1.3 I had to download an archive with the executables contained that 1.3 installs. Patch 1.3 brings DX8 support.

Download dgVoodoo 2.51 and extract the MS files to the Requiem folder (brings DX8 wrapper), configure the DX settings via dgVoodoo setup creating a dgVoodoo.conf file in the Requiem folder (my settingd see image). Mip-mapping is disabled because the Requiem ReadMe files suggest it. Not sure if useful or necessary.

Set D3D.exe (DX8 version) to Win98 compatibility and run it. :-)

edit: v-sync creates horrible lagging menu after some time, so I switched it off.

Running fine here on win 7 64bit pro.
I'm running the D3D version at 1280 resolution, and when I reach the bug area, I'll load it up in 3dfx ( won't run full screen on 3dfx ) to get past it, then re-load the d3d, full screen version