Well, I have a dedicated games machine which is running Win2K SP2 with directX 9, and pretty much everything I've tried runs fine. The list includes:

GTA3
GTA:Vice City
Quake3
Quake2 (openGL version)
Doom and Doom2 (classic fun)
BF1942
BF1942 road to rome
BF1942 desert combat
RTCW
Wolfenstein enemy territory
Red faction
Flanker 2.0
Unreal Tournament + lots of mods
UT2003
bzflag
Unreal
Unreal II
etc.

There's at least a dozen more that I can't remember offhand. In fact, the only one I so far haven't been able to persuade to run under Win2K is Hexen II, which is a shame because it's a nice game.

Many of these games also work with the VR headset you saw in Amersfoort, which is fun.

pca