I have played and enjoyed tons of RPGs, and I would like to mention a lot of them, but the single very best of them all is without any doubt DUNGEON MASTER 2: THE LEGEND OF SKULLKEEP. It has unmatched atmosphere, great game system, the best shop system I have ever seen in an RPG game and excellent magic system. It also has brilliant soundtrack and beautiful graphics that doesn´t age at all.
I finished it many times, yet still I return to it every once in a while a finish it again. Those of you who never tried it - you really missed something huge - get it just now (its abandonware easy to find and runs just fine via dosbox) and play it!-reply by RPGeek