I'm surprised you're having trouble finding it. I got it through the usual installation methods ... I think you might have to add a certain depository or something? Sorry I can't be more helpful.

But man, I loved dungeon crawl, even though it was crack. I think about 80% of my time on the n810 (before the screen went bad) was spent playing dungeon crawl :-[. The great thing about dungeon crawl is that you can play it without using spoilers, unlike that horrible "game" nethack. I think the only spoiler that was somewhat necessary was the God spoiler, since the divine favors are somewhat random and hard to figure out. A general knowledge of proficiencies and how experience is calculated was helpful in planning out a character long term. (Minotaurs are bad at spellcasting, receive only 70% of the experience, etc.) But all the proficiencies can be accessed during the game (i think, "a" for abilities, and then "!" for proficiencies or something?), so that's not really a spoiler.

But the game is huuuuge. I think there's a main dungeon and then about 7 or 8 enormous sub-dungeons. A lot bigger than nethack.

Oh ... and if you ever end up in the abyss... don't stay and fight, but run until you find the gateway out. i think that's the only thing that I thought was somewhat unfair. Otherwise, I think it was mostly my stupidity that got me killed, time after time, after being in a coma because I played for like 8 hours straight. I remember my elven ice mage dying to a summoned executioner (a gray "1", killed me extra fast because of intrinsic haste), when I had about 5 teleport scrolls remaining, and i was genuinely traumatized for the rest of the day.

But, man, that's an awesome game.