First-Time DM Tips: What Actually Matters?

A Practical Guide for Running Your First D&D Game

by Jackson Dean Chase

Founder and Lead Designer, MageGate Games

Why trust this guide?

MageGate Games founder and lead designer Jackson Dean Chase is a USA Today bestselling author, veteran Game Master with more than 40 years of gaming experience, and the author of dozens of 5e-compatible sourcebooks and GM resources.

MageGate Games was founded to create practical tools that help Game Masters prepare faster, make stronger decisions at the table, and build more memorable campaigns.

This guide draws on that same philosophy: focus on the parts of DMing that actually matter in play—clear situations, meaningful choices, adaptable preparation, and keeping the game moving—rather than treating exhaustive rules mastery, worldbuilding, or performance as prerequisites for running a good session.

The DM's Job Is Easier Than You Think...

Running your first D&D game can feel much harder than it actually is.

New Dungeon Masters often assume they need to know every rule, build an enormous world, prepare for every possible player choice, create memorable NPCs, balance every encounter perfectly, and somehow keep the entire table entertained at all times.

You do not.

A good first session requires far less.

What matters most is giving the players a clear situation, meaningful choices, understandable stakes, and enough structure to keep the game moving.

If you can do that, you are already doing the most important parts of the job.

1. Prepare Situations, Not Scripts

Do not try to predict exactly what the players will do.

Instead, prepare a situation.

For example:

• A merchant caravan disappeared on the forest road.
• Something has occupied an abandoned watchtower.
• A local priest believes someone is stealing bodies from the cemetery.
• Two rival factions both want the same artifact.

Know:

• what is happening
• who is involved
• what those people want
• what happens if the players do nothing

Then let the players decide how to respond.

This is much easier than trying to write a story that depends on the party making specific decisions.

2. Start With an Obvious Problem

Your first session does not need an elaborate mystery.

Give the players something they immediately understand.

Someone is missing.

Something dangerous is nearby.

Someone needs help.

Something valuable has been stolen.

Once the players understand the problem, they can start making decisions.

Clarity creates momentum.

You can introduce complexity after the game is moving.

3. Do Not Prepare More Than You Can Actually Use

New DMs frequently overprepare because preparation feels safer than uncertainty.

But much of that work may never reach the table.

For a first session, you usually need only:

• the opening situation
• a handful of important NPCs
• several locations
• one or two likely encounters
• basic information the players can discover
• a few names you can use when improvising
• an idea of what happens if the players ignore the obvious path

That is enough material to run a surprising amount of game.

4. You Do Not Need to Know Every Rule

You will forget rules. Experienced DMs forget rules too.

When you do not know something, you have three reasonable options:

• Look it up quickly.
• Make a temporary ruling and keep playing.
• Ask someone at the table if they know the rule.

The important thing is not demonstrating perfect rules mastery.

It's preventing a minor rules question from stopping the game for ten minutes.

You can always verify the rule after the session.

5. Give Players Meaningful Choices

Players should regularly be able to decide what happens next.

That does not mean providing infinite options.

A simple choice is enough:

• negotiate or fight
• enter through the gate or find another way
• trust one NPC or another
• pursue the fleeing enemy or protect the wounded villagers
• take the dangerous shortcut or the safer long route

Choices become meaningful when different decisions can produce different consequences.

That is one of the easiest ways to make a game feel interactive rather than scripted.

6. Let Player Ideas Work

Players will propose solutions you did not anticipate.

That's good.

If an idea is plausible, let the dice or circumstances determine whether it works.

Do not reject a clever approach simply because it bypasses something you prepared.

If the players avoid your carefully designed encounter through smart play, they did not "ruin the encounter."

They succeeded at the problem you gave them.

You can use the unused material somewhere else later.

Maybe even in the same session, or the next one.

Seriously.

Your players will never know the difference.

For example, if your players avoid the evil wizard's ruined tower, simply move the tower where you need it to be, or have them discover a similar ruined tower (just change the name and maybe replace the wizard if you want to keep his tower in its original place on the map).

Maybe the "second" tower belongs to the wizard's rival, enemy, mentor, lover, or ally.

Maybe you swap out the wizard's minions from orcs to goblins, or from human guards to skeletons and zombies. This kind of change can be done on the fly in reaction to what the players do.

Or, instead of it being a tower, what if you reverse its structure to extend down in the ground as a cave or dungeon? Simply carve it into a mountain or dig it into a forest or canyon floor. You can even reskin it as a bandit hideout, undead burial pit, burrowing monster tunnel, or whatever location you need.

It really is that easy.

If you need to quickly customize your villains, minions, and NPCs, check out the Game Master's Guide to Traits & Actions for Monsters & NPCs.

If you need to customize a lair to fit a specific theme, our Legendary Lairs series has got you covered. From boss fights to minions, from traps to terrain, and even magic items. Plus advice on how to run each type of lair.

7. Keep Combat Moving

Combat is one of the easiest places for a first session to bog down.

You do not need complicated tactical encounters immediately.

Start with:

• clear objectives
• manageable numbers of enemies
• understandable terrain
• opponents with simple tactics
• visible stakes

Also remember that enemies do not have to fight until every creature is dead.

They can:

• retreat
• surrender
• negotiate
• call for help
• change objectives
• try to escape with something important

That can make combat feel more alive while shortening encounters that have already reached their dramatic conclusion.

Once you get comfortable running combat, one of the best ways to mix things up is by adding weather and terrain. You'd be amazed how adding a simple storm, difficult terrain, trap, or hazard can change things for the better. Suddenly, that "boring combat" has hard choices, and hard choices are what makes the game fun.

8. Make Failure Change the Situation

Failure should usually create a consequence rather than simply stopping progress.

If the players fail to pick a lock, perhaps:

• they make noise
• they lose time
• a guard approaches
• they must find another entrance

If they fail to persuade an NPC:

• the NPC demands something in return
• the NPC gives incomplete information
• another faction becomes involved

This keeps the game moving.

A failed roll becomes something happening, rather than nothing happening.

9. Ask the Players What They Are Trying to Accomplish

When you are unsure how to resolve an action, ask:

“What are you trying to accomplish?”

That question solves a surprising number of problems.

Once you understand the player's goal, you can determine:

• whether a roll is necessary
• what ability or skill applies
• what success means
• what failure might mean
• what consequences are reasonable

Do not become trapped adjudicating the literal wording of an action before understanding its purpose.

10. End With Something That Points Forward

Your first session doesn't need an enormous cliffhanger.

It just needs a reason for the players to come back next time.

The players might:

• discover a larger threat
• find a mysterious object
• learn who hired the villains
• earn an enemy
• receive a new mission
• uncover evidence that their assumptions were wrong

Give the session some sense of completion while leaving one door open.

That creates momentum for session two.

What New DMs Usually Worry About Too Much

You probably don't need to worry much about:

• creating an enormous campaign setting
• writing detailed histories
• giving every NPC a unique voice
• building complicated political systems
• perfectly balancing every encounter
• predicting every player decision
• memorizing every rule
• performing like a professional actual-play DM

Those skills can develop later if they improve your game.

Your first objective is much simpler:

Create situations your players want to engage with, then respond to what they do.

How MageGate Games Approaches GM Preparation

MageGate Games designs GM resources around a simple principle:

Preparation should create useful decisions at the table.

More preparation is not automatically better preparation.

A hundred pages of history may contribute less to the next session than:

• one villain with a clear objective
• one location with meaningful terrain
• one difficult decision
• one secret the players can discover
• one encounter that can develop in several directions

The goal is not to predict the session.

It is to prepare enough structure that you can confidently respond when the players do something unexpected.

That's also why reusable GM tools are valuable.

Encounters, villains, magic items, traps, religions, lairs, and other campaign elements work best when they give the GM something actionable, rather than simply adding more information to remember.

We've got free GM resources for all of them right here on this site, as well as bestselling books to take you further in the MageGate Games store.

A Simple First-Session Checklist

Before your first game, make sure you know:

• What is the immediate problem?
• Why should the characters care?
• Who are the important NPCs?
• What do those NPCs want?
• What locations are likely to matter?
• What danger or opposition exists?
• What clues or information can the players discover?
• What happens if the players choose something unexpected?
• What could point toward the next session?

If you can answer those questions, you probably have enough to start.

Frequently Asked Questions

Is being a Dungeon Master hard?

There is a learning curve, but you do not need to master everything before starting. Most DM skills improve through actual play. Begin with a manageable adventure and learn one session at a time.

Do I need to read the entire Dungeon Master's Guide before DMing?

No. Learn the core rules needed to run the characters and adventure you are using. Reference additional rules when they become relevant.

How much should a first-time DM prepare?

Prepare enough material to understand the situation, important NPCs, likely locations, possible encounters, and major consequences. Avoid trying to predict every action the players might take.

What if my players do something I didn't prepare for?

Determine what they are trying to accomplish, consider how the world would reasonably respond, and make a ruling. Improvisation is a normal part of running tabletop RPGs.

What if I make a rules mistake?

Keep the game moving. Make a reasonable ruling if necessary, verify the rule afterward, and correct it in future sessions.

Should my first campaign start at level 1?

Level 1 can make character abilities easier to learn, but it is not mandatory. The more important consideration is choosing a starting level that you and your players can comfortably manage.

Do I need to create my own campaign?

No. Running a published adventure is completely reasonable and can reduce the amount of preparation required while you learn how to DM.

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