In Dungeons & Dragons, the scope of the adventure is only limited to the collective imagination of the dungeon master and the players, unlike in video games like Back 4 Blood where they are constrained by developer time and effort. The source books provide all that they need to get started, but outside of that they can expand the story in any direction they wish.
That is one of the things that makes Dungeons & Dragons such a memorable and popular game. It's rare to find two adventures that are
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