Wow. If you've ever wanted to experience the personification of redundancy, then by all means, go out and pick up Dungeon Maker II. You get the same monsters, same town layout, same quests, same progression, and same experience as the first game. You get a sidekick a few hours in, which is new, but this so called partner quickly eclipses your own character and the fact it is indestructible throws out any challenge the game would normally offer.
You'll have to get halfway through the game before you encounter any other new content, in DMII, so no one will fault you for putting this down (or in the trash) after suffering the biggest case of Déjà Vu in gaming history.