Hubris Games (http://www.hubris-games.com), the makers of Story Engine and Maestrom, reviewed on this site, have a few plug-ins for their games downloadable for free. I just poked through Dublin's Tomb (http://www.hubris-games.com/pdf/dtomb.pdf), a classic dungeon crawl for their system, with nice notes and easy-to-convert hazards of various kinds.
This would make a spiffy Donjon Krawl dungeon; I think I may use it myself.
--JB