GM in a JarGM in a Jar Resources for Tabletop Gamemasters
  • 24 January 2023
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Need good ideas for dungeons? Give Fantastic Lairs a shot

Today I'm going to review a book I purchased two years ago and used a lot since then. I'm talking about Fantastic Lairs by M. Shea, S. Fitzgerald Gray and…

  • 23 January 2023
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5 best tools for my D&D online sessions

I decided to share an overview of the tools that I use for my D&D online sessions, as it is a commonly asked question. The tools are not ordered from…

  • 20 January 2023
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creating and animating a background visual for my D&D online campaign

In one of my active Dungeons & Dragons campaigns, the group discovered an ancient ruin in the dessert, where the entrance is a giant stone snakes mouth. As we are…

  • 20 January 2023
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Welcome to GM in a jar!

Hi folks, this is the first post and I wanted to give you a warm welcome on GM in a jar! I intend to use this website to share some…

Hi there, i'm a GM for several groups, and this is my place where i write about my gamemaster experiences.

I decided to create this blog to help other GMs out with the stuff i create for this awesome hobby. Hope you'll learn something or get inspired!


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