I never officially released 4 Towers (probably why there is no readme.txt file). Heck, I don't know if anyone plays it. There was a huge FPS problem w/ it and it still needed Ter' tweaking, etc... I'm kinda torn about you having it up for d/l. I'm really leaning towards asking you to remove it for now.
This map is being removed per the authors request. We wish Joe all our best, and hope the map is published some time in the future.