Oh boy, there's a blast from the past. I wrote Upwarp, so being able to zip around the place again was very nostalgic. :3
Woah, nice! It was one I only had bits and pieces of, because I'd explored it rather less than others. Did you know that there's a concerted effort to revive Puzzlebox right now?
https://wiki.postfurry.net/wiki/Postfurry_MUCK
Ooh, I did not! That might be an interesting place to visit, even if these days I don't have the spare hours I invested into the original. Thanks for the tip!