Before The Crash, a quest was a weekly NPC generated task which involved helping NPCs with various tasks, and exploring dungeons. Some would be quite easy, such as helping a farmer, while others would be extremely difficult such as raiding a high-level dungeon. There are individual quests, quest chains, and the most complicated, quest trees.
Interestingly, some quests still function as they do in the Aetheria Server before The Crash, such as The Tomb of the Forgotten King- with periodic resets and remnants of the Server's scripting.
Quest Offices Edit
Quest Offices are locations situated in various settlements, built by the Knights of Aetheria. Supposedly, a Knight of Aetheria heard from a Terrarian about the quests in the original game, and was fascinated at the idea. Thus, the Quest Office was created.
One would arrive at a Quest Office, and explain any hardships that they may face to the Questmaster. They would explain their problem, and their reward. Willing players would then finish the quest and then claim the reward.