These are 3D representations of a game called Oxyd (http://en.wikipedia.org/wiki/Oxyd) that I have created using a "landscaping" 3D program called Bryce 5. Because Bryce is "just" for scenary stuff, there is no way to play these levels. But there have been a few 3D Oxyd games out there. But these 580 official Landscapes are just for show.
Some of these landscapes are available as Jedi Knight CTF Levels: http://jkhub.net/project/show.php?projid=549
All of these pictures can be viewed at http://edward256.deviantart.com http://www.edwardleuf.org/Oxyd/3DOxydPics/