Isometric Dungeon Designer

Publisher's blurb: With the Isometric Dungeon Designer, you can create a myriad of fantasy, isometric dungeons for the needs of your party and gaming group. Sprawling multi-floor dungeons, massive boss battle arenas, or a dark fortress littered with ruins and the undead. Load the pieces into your favorite image-editing tool with robust layer support (I recommend photoshop), and start building!