I think this list: Windows Glide Games List
is kind of misleading. There are lots (and I mean LOTS) of games listed here that don't support Glide. I understand it was mentioned that some were added just because they had '3dfx' on the box, but either way it makes the title and content incorrect. Like, just to pick one from the list, Grim Fandango - is D3D only, nothing to do with Glide.