basically the idea is usually dungeons goes up in a tower like fashion, but the dungeon-ish design i got here is more like underground tower that decends deep down, the current version kinda acts like what would it feel like, as you keep going, down and down and further, when there actualy variety and randomization to the floors and some aesthetics tweaking it should feel like that soon.
i guess you would call it "descending the abyss, floor by floor filled with unknown monsters"