I was wanting a break from the tedium of all the decorations in Soylent Zed and wanted to learn how to put in welded doors. Soylent Zed started with the concept of 'Zed shooters" but got lost in the Soylent Green idea. I also wanted to experiment with the sky box a little.
I consider the skybox experiment a huge success and will most likely use it in futrre "dreamscape" type maps, I find the effect just stunning. The "shooter" idea was intended to be like a skeet shooting thing, but fails here, too many too fast to keep up with.
What remains is a fast fun map that "just happened" from experimentation.