It wasn't the mini-games in Polyhedron that wowed me, but rather the articles that it included.
I can't tell you what issue, or who wrote it, but there was a great short article on having "alertness levels" in the dungeon that made the denizens become more proactive as a general alarm was raised (by invading adventurers). It was pure gold, and still holds up today as a great piece for anyone who wants to run a dynamic dungeon.
I really need to go dig that out sometime soon.
Any chance we'll ever see the rest of Downer compiled? (I'm guessing that WotC doesn't have the rights to Downer or Zogonia, based on the earlier compilations.)
I'm pretty sure it was written by none other than Mike Mearls, but I'll be darned if I can remember the issue number off hand (I do believe a variant of it showed up in one of the adventures he did for Fiery Dragon Press).
Cheers,
Colin
I ninja'd you.