A three-level demo of a 10-level solo scenario. (The first level has been altered a little from the original Baraka demo.) Also included are three net levels, as well as lots of peripheral info... a silly movie (you'll need a tool that can make it visible, like ResEdit), screen shots, sketches of work and info on the mapmaking process. Fun, but it seemed to go by pretty quickly...

You may want to look at the floppy-sized digestible chunks page.