
One-Shot Adventures
- Learn how to play, great for beginners
- Choose from list of premade characters to make things easy
- A complete D&D experience in less than 4 hours.

Full Campaigns
- Join a larger adventure that will take place over several gaming sessions
- Choose from officially licensed content or create a world and story collaboratively with your DM

Corporate Events
- Fun way to strengthen your team or introduce new colleagues
- Learn about your team in a new way
- Also great for schools and clubs
Need to hire a Dungeon Master?
If you have a group of adventurers interested in learning about Dungeons and Dragons but don’t have a Dungeon Master or know how to play, then D20Mastery is a great way to get a deep-dive, first-hand experience playing the world’s greatest game. We offer single session One-shot adventures, extended multi-session Campaigns, and custom-tailored adventures for your party or Corporate Event.
Whether you’re a newcomer to D&D or a veteran adventurer, we are here to guide you through an engaging session or an interactive workshop. What are you waiting for? Start your adventure today.
How does D20Mastery work?
Dungeons and Dragons is a role-playing game where players come together to play as heroes in a daring, fantasy adventure. This game requires a DM, or Dungeon Master, to create and manage the world, play the roles of NPCs, and act as a de facto referee and judge for the players. This role requires significantly more effort than playing a character, and a lack of DMs is the bottleneck of Dungeons and Dragons adoption.
At D20Mastery, we will act as Dungeon Master in your adventure or campaign so that you can enjoy creating and playing a character. As long as you provide a location, we will come to you to help write your group’s story.
Booking your next session is simple. Use our Contact Form to let us know what type of experience you want to have and we will tailor the campaign or session to your needs.
What to Expect?
Published Adventures
Use an official WotC adventure located in settings such as The Forgotten Realms, where your characters actions and choices influence the world around you.
Homemade Adventures
If you do not want to use a published adventure for a longer campaign we can work together to create an original setting and story. If desired, this can involve an extra introductory session where we all create the world and its history together, then use that to create vibrant and engaging characters within that world.
Custom Experience
Do you want to pull of an epic heist? Delve into mysterious dungeons? Hunt epic monsters or forge powerful weapons? We will work with you to provide the adventure you are looking for.
All are Welcome
Dungeons and Dragons is a game for everyone, and diversity at the table is always encouraged and respected. We run an inclusive game where everyone is welcome to play and learn.
New Players
If it is your first time playing Dungeons and Dragons and you need an orientation, we will provide all new groups with a free hour before the session to go over all of the rules and help you select and customize your characters.
All Experience Levels
It doesn’t matter if you are a seasoned veteran or have never rolled a 20-sided dice, we can accommodate players of any experience level. we run single session adventures, corporate events, and weekly campaigns that can span several years.
Materials
We provide all dice, character sheets, and maps for our adventure. A battle-mat is used to track movements during combat encounters, with tokens and miniatures when available. New players will get to keep their dice at the end of the session to use during future adventures.
Travel
We are located in Berlin and can travel anywhere within the city for a session. If you would like us to DM outside of the city additional travel expenses may apply.
Tabletop Experience
A true tabletop RPG experience—rolling dice, tracking your character with pencil and paper, and making choices that shape the adventure. You’ll be fully immersed in the story with hands-on gameplay and strategic decision-making.