I added an isometric graphics view to rdc's ddd (deep deadly dungeons), by writing an iso engine, and borrowing some graphics from Falconseye, a version of nethack. Press ? in the game for the keys. Shift-Q quits, g gets, z zaps, arrows move, etc.
It's just the version number I got up to when working on it. I hadn't done anything on it for about 2 years I think so I decided to just package up what I have and post it.