Babylon's 6 D&D Tips
I DM’d D&D for ten years. I started in middle school, and I kept it up until my sophomore year of college. This is my mini-guide for what the game is, what it isn’t, and how to play it well. So. From the top.
Tip 1: Don't make your main storyline time dependent.
D&D is an amazing open-world experience. You can pick at any detail. Nothing is a non-interactable part of the scenery. If there’s a sewer manhole, you can lift it up and climb down. If there’s a house, you can look inside and rob it. If there’s an NPC that you meet at the market, you can follow them home and see their whole life. Their parents, or their partner, their trade - all of it. It will be made up on the fly by some sort of reasonably skilled improv speaker, but it will also exist after that. That’s how the world is built. That’s the secret sauce that makes D&D beautiful.
If your plotline is too urgent, it kills those opportunities. The worst example of this that I have isn’t even from D&D, but FO4. The game is clearly built around exploration and adventure. The plot is built around rescuing your kidnapped baby. There’s a lot of tension between those goals. The plot does not work with the game mechanics, and it's really, really, jarring.
Be wary of doing that. It's surprisingly easy.
Tip 2: Don't set up giant, epic, fantasy battles between multiple armies.
D&D is not a very good epic-battle simulator. There are games that have streamlined combat mechanics to allow for whole armies to fight, but D&D is very detail oriented, and trying to control too many people at once makes combat slow to a crawl. That very creative DM who can tell you every detail of an NPC’s life is also just not very good at multitasking.
If you really, really want to - fine. But you should be ignoring standard mechanics when you do so. Move to a “cinematic mode” and just go by vibes. And generally, take a moment to “get” the game before modifying it. If the kind of plot you really want is urgent, and involves epic scale armies, maybe look into different RPG systems. D&D specializes in exploration and small, focused parties. Using it for things outside of that is kind of like hitting nails with a wrench.
Tip 3: Don't prepare your plot like it's a book. Kill your lore codex.
D&D is a collaborative storytelling adventure. That's the secret sauce. Writing out codexes and trying to crystallize the world before you start playing ruins the collaborative element. It’s genuinely better if you build as you go. It lets your players give input. And it saves you a lot of time. Why bother trying to write up who the Mayor of Snoresville is if there’s a good chance your party never even talks to him?
(I would also apply this to writing in general. If you want to write all of your world's lore before starting your book, you'll never start your book. And you'll go crazy. Fear the lore codex.)
Tip 4: Prepare your combats and your NPCS rigorously, but generically.
This ties in to Tip 3. If you spend a lot of time preparing the lore of the Bandit Leader of Redgrove, things like his family history, or his trauma, or his deep-down character motivations, and then the party never goes to Redgrove, it all goes to waste. D&D evolves rapidly and chaotically, so building things in a modular, reusable way really pays off.
So. I tend to have two big pools for my NPC work. One is a character sheet pool. I keep it small and focused. I can generalize most melee classes ahead of time, so I can have an Archer, a Brawler, a Tank, and some Generalist Infantry. That’s like, 80% of your martial enemies, done. Spellcasters are a bigger pain in the ass, but a few pre-mades thrown into a campaign pays off if you know your themes. If you’re dealing with a death cult, make some death clerics. A dragon will probably have sorcerer acolytes.
My second pool is a pool of character mannerisms. Some should absolutely be practiced ahead of time. Figure out what mannerisms make your villain really pop. And if the party skips that villain, just move those mannerisms to some new guy down the line and you’ll still be fine. Nothing wasted. A lot of the mannerisms are going to be picked with no heads up when the party does something weird, like following a random merchant around for a few days just to see how they live. You can get through almost all of those extremely well with just variations on the 4 humors, the 3 socioeconomic classes, and regional dialects.
Tip 5: Give your players permission to inject themselves into the world.
It is common for people to over-formalize the rules and responsibilities of “being a player” vs. “being a DM.” I think the most common way to phrase it is something like “The Players are in charge of their characters and their backstories, the DM is responsible for the worlds and its NPCs, and both need to stay in their lanes.”
It’s isn't just better to mix it, it's necessary.
Failing to share these roles forces the world to exist in a crystallized state before the campaign even starts - at least if you want to integrate backstories into the plot. Groups that fail to do this can often feel like the characters were born the day the campaign began, and did nothing interesting beforehand.
So, for DMs: Don’t be afraid of trying to inject NPCs and details of this world into your player's past. Imagine that your party rogue goes into a town and finds a fence for selling some stolen trinkets. Maybe, have the fence recognize the rogue. “Gods of fire, it’s McClellan. I haven’t thought about you since the candy-rat incident. You took a real beating making sure I got away that day. Glad to finally have a chance to pay you back!”
Now, the rogue still has a choice here. They can say something like “Ah, this guy is mistaking me for someone else, but I can roll with it to get a better deal.” It’s their character, and their choice. But they can also go, hey, I do know this guy. I was apparently part of something called “The candy-rat incident.” I can decide how I know this guy, and where, and for how long, and what that incident was. That’s not less control - that’s more!
And for players: Don’t be afraid of injecting your past into the world. Maybe you’re a fighter in a wartorn setting and you run into a group of deserters robbing refugees by the roadside. The DM has clearly planned this as some vindication, some enemies you get to thrash without feeling bad. But you have different plans. You take your helmet off, and you look the deserter’s leader in the face, and you say “Jack, you saved my life back on Stone Ridge. You were a good man once. You could be one again. Ride with us.”
Now that's powerful stuff. Do you even know what Stone Ridge is? Hell no. Are you gonna? Hell yeah. And what you just did was way better than the DMs plan of bonking bad guys to feel good. You changed the writing of the world, commandeered an NPC, and made the whole encounter far more interesting.
Tip 6: Ignore all portrayals of D&D in the media.
The best players that I get are people with no experience with D&D of any kind. The second best are those that are willing to drop their preconceptions at the door and just play. The worst are people that have seen D&D portrayed somewhere and are insistent on imitating the portrayal. The exact nature of the failure varies - at worst, they’ve seen some kind of tongue-in-cheek parody, like order of the stick, and then hyperfocused on all the worst parodied aspects as the whole point of the game. D&D is not about outsmarting the mechanics (which is trivially easy, and largely pointless - it just makes your own storytelling less fun), nor is about turning everything into shallow tropes about Horny Bards and Dumb Fighters and Insufferable Paladins. At best, they’ll have seen some kind of ultra-cinematic example of D&D played on a podcast, where the DM has a theatre degree and ever party member is a professional actor. Those people are nice, but they often have unrealistic expectations.