This is pretty simple tool if one likes to make maps and such. (As we all know, part of the game is making the maps ... it scratches the itch.)
Seemed pretty useful and free, free. (Didn't get a chance to review the options for publishing.)
Though I would say, this is making a drawing tool that makes dungeons. It would make more sense to me if you just got a big block of dirt and pushed your dwarves through it to make the dungeon. Then, brought in the craftsmen to make the arches ... rather than drawing a dungeon, build it as you go.
But, then, who needs such things when you can Zen your way through for $2?