This module is certainly a classic that many of us older players remember fondly and was actually the first one I ever owned. My biggest criticism of the module is that there really isn't any plot. There are maps, monsters, and treasure but unless the DM makes something up there's no rhyme or reason for it all to be blended together into the great adventure smoothie it is. It's reasonable priced but any DM is going to have to put in a little extra work to make this more than a dungeon crawl.