Considering the scattering of the objects, layout of the map, and general feel, I have to rate this game poorly. If you've played the original Zork at all, you know that the bank, carousel room, and riddle room are not in the first game. The game plays like someone smushed together Zork 1 and Zork 2 to make this. I would recommend to anyone who wants to play the Zork trilogy to download the files from the Infocom website, instead of playing it here.
The writing was beautiful. At first, I did not understand the number part, but it all solved itself later on. The ending made me sad and happy.