I never recall seeing that there existed a DS version of Linley's Dungeon Crawl, but there does. The original version was meant for slot-2 devices using libfat apparently. I stumbled across 1.0-beta2 version of the libfat versions on several forums(simply google for them), originally by someone using the screen name sasq, dropped development in May 2007. Here, http://errabes.free.fr/pogo2/ , is a link to a DLDI version that someone using the screen name errabes made. While I have downloaded it, I have NOT tried it myself yet, but thought that other might appreciate the link. The page also contains glkpogo2 which is apparently a frotz port(unsure). Source is available from those pages. The DLDI porter dropped working on it apparently, as he mentioned that he had purchased a Nokia n800 and would be spending time developing for that rather than the DS.