This is my first map for TF2, based on an idea from a map I made for TFC long ago. The name comes from the two helical ramps (now four) going around the outside with periodical connections between the two, based loosely on DNA. I plan a series of helix maps, each with a different game mode, and each with a completely different visual theme, so they won't all look alike. I made the smallest and easiest, koth, first. Unfortunately, although I was using TF2Maps.net tutorials, it didn't occur to me to post the map here until (I thought) it was nearly done. My friends say it looks and plays great, but while that stokes my ego, it is not necessarily useful. I had changed the design away from medieval to a skyscraper, but then I learned that some people are playing this in medieval mode and enjoying it, so I decided to continue developing this as a medieval mode map, while also working on the skyscraper version, which is now named koth_helix_tower. I have now released koth_helix_b6!