* Pregenerated monsters, treasures and traps;
* Dungeon dressing from the 1e DMG;
* Lots of interesting map features, such as statues, pillars, curtains, daises, raised galleries, pits, water, caves and rubble;
* Regular openings along the sides so you can use them as dungeon geomorphs!
Sadly, there’s no option to display the dungeon in the light blue coloring of an old-school TSR module, but that’s an insignificant quibble. This is superior to the best free online dungeon generators I’m familiar with, such as donjon or Gozzy’s. I highly recommend it!