Pool of Radiance (the original) is great after you learn to deal with its somewhat kludgy interface. I'm a dumbass millennial with no backbone but it was so good I finished it anyway without any walkthroughs or FAQs or gold box companions*. Even drew my own maps!
(*Granted, I had read the CRPG Addict blog about it, but that's all.)
(*Granted, I had read the CRPG Addict blog about it, but that's all.)