As you might know Outcast 2 and Delta Force 3 will be polygon based/hardware accelerated.
I loved to play Outcast; seems like you don't see the pixels anymore after some time of playing.

The best positional 3D sound is in Thief and Thief II, even on just two speakers.

I'll be back...

[This message has been edited by Mephisto (edited 08-24-2000).]