DXStudio looks to be an like an interesting product:
http://www.dxstudio.com/
I just d/l'ed the free version and I am poking around with it. Don't really know much about it at the moment, but it looks interesting.
Cool looks like fun, Let us know your findings dude.
I have been playing around with it a bit. It has a lot of capability and is fairly easy to use. It uses javascript, which I haven't used before, so the scripting is a bit of a hurdle right now.
I plan on doing a little prod in this once I get more familiar with the scripting. I might redo The Last Mission in 3D. :)
Looks very cool, the player didn't install cleanly here though unfortunatley.
Some of those screen shots look pretty impressive!