So I was just playing Kingdoms of Amular doing quests when I decided to check my map, and then notice the world map which I hadn't seen before for some reason. I then see that there is a fast travel system... O.O
All of this time since I began the game (not too far, but enough to have done some quests) I have ran back and forth from the woods to town to hand in quests. Never realizing I could use fast travel and cut down on so much time.
So for the topic, any useful features you didn't realize where in a game and then finally noticed it?