Leadwerks Sandbox is a new editor from the makers of 3D World Studio. Sandbox features real-time soft shadows, real-time physics editing, and terrain editing with up to 33 million poly terrains.
Here's a preview video of the physics editing:
http://www.youtube.com/watch?v=xz9jPmSnMiw
Here's a preview video of the physics editing:
http://www.youtube.com/watch?v=xz9jPmSnMiw