* Ultima Underworld had what is still one of the best auto-maps of all time. While the features stood out, the walls and parchment background looked like it belonged. And your ability to write (and erase) directly on the map, anywhere, was a big deal. Actually, it still is. Itís fortunately more commonly matched in the modern era than it once was, but I donít think it has been surpassed. Iím not sure what youíd do to surpass it, to be honest.
* A dynamic music system. Many games at the time would switch between combat and exploration music, but the music in Ultima Underworld was even more situational, and was designed to (almost) seamlessly transition between themes as you transitioned between states. The UU music remains on my inspirational music playlist.