Last year my one-page dungeon The Halls of the Mad Mage, inspired by the twisted landscapes of M.C. Escher, won Best Geometry in the One Page Dungeon Contest. The deluxe version of the One Page Dungeon Codex 2009, which collects all of the winners, has now been released as a FREE e-book from Tabletop Adventures.
I believe the 2010 contest has also concluded (I didn’t enter this year).
THE HALLS OF THE MAD MAGE
If you like The Halls of the Mad Mage, while you’re at RPGNow for the Codex, you might also want to check out some of my other adventure supplements: