07/16/2026
One of the biggest misconceptions about being a Dungeon Master is that you have to create every detail of your campaign world yourself. Whether you’re running a completely homebrew setting or a published adventure, it’s easy to fall into the trap of believing every city, religion, custom, and historical event has to come from your notes. In reality, some of the most memorable parts of a campaign come from your players. Giving them the opportunity to contribute to the world not only reduces your workload, but also creates a setting they become personally invested in.
This idea works just as well in a published adventure as it does in a homebrew campaign. One of the advantages of running a pre-written adventure is that much of the work has already been done for you. The maps are drawn, the villains have motives, and the encounters are ready to run. That doesn’t mean the world has to remain frozen exactly as it appears in the book. A published adventure should be viewed as a foundation rather than a finished product. As your players interact with it, allow them to leave their mark on the setting.
One of my favorite examples actually comes from when I was a player. In my friend Justin’s homebrew campaign, I played a cleric of the Knowledge God Avenroo. While creating my character, I decided that one of the central tenets of Avenroo’s faith was that his followers would never knowingly lie. To them, spreading misinformation was a betrayal of the knowledge they sought to preserve. Justin could have told me that wasn’t part of his world, but instead he simply accepted the idea. From that point forward, it became part of the campaign’s lore. That single decision gave me a roleplaying guideline that shaped nearly every conversation my character had, while also adding depth to the religion without Justin having to invent it himself.
I had a similar experience from the other side of the screen while running Out of the Abyss. My wife played a Yuan-Ti warlock named Sisava whose patron was Guanadaur, the god of slimes, outcasts, and rebels. She decided that Guanadaur wanted his followers to actively recruit others into his service. Everywhere the party traveled, Sisava would explain why people should devote themselves to Guanadaur in exchange for power and purpose. She wasn’t a cleric preaching from a temple; she was more like a door-to-door recruiter trying to convince anyone she met to join her patron’s cause.
Rather than telling her that wasn’t how Guanadaur’s followers behaved in the Forgotten Realms, I embraced the idea. We even sat down and created recruitment flyers that she could hand out during the game. Since we played at a local game store where new players frequently joined our table, she would greet them with one of her flyers before trying to recruit them into Guanadaur’s growing following. It became one of the running jokes of the campaign, and everyone who played with us remembered Sisava’s relentless recruiting. None of that came from the adventure book. It came from a player’s creativity and a Dungeon Master willing to say, “Sure, let’s make that true.” Below is that flyer we created together.
Of course, this doesn’t mean players should decide who the final villain is or rewrite the history of your world whenever they feel like it. As the Dungeon Master, you’re still responsible for the larger structure of the campaign. But there are countless smaller details that players can help create without disrupting your plans. Let them invent a holiday from their homeland, describe a famous tavern they once visited, establish a family tradition, or explain the customs of their religion. Those contributions make the world feel larger because it no longer exists only inside the Dungeon Master’s notebook.
Looking back over the years, some of the parts of my campaigns that people still remember weren’t the carefully planned encounters or the elaborate story arcs. They were the unexpected ideas that grew naturally from the players around the table. Whether you’re running a homebrew world or a published adventure, don’t be afraid to let your players help build it. You aren’t giving up control of your campaign—you’re gaining a team of creative collaborators, and your world will almost always be richer because of it.
What is one piece of your campaign world that came from a player instead of the Dungeon Master? I’d love to hear your favorite examples in the comments.
Keep on gaming!