Grim Press

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Welcome to the blog and creative hub of Justin Andrew Mason.

I am a professional and freelance game designer and developer, ENnie award-winning best selling author, and Map Master award-winning fantasy and science fiction cartographer (among the many other hats I often wear in the game design industry).

General Information: Justin resides in Hopkinsville, Kentucky and serves as a creative collaborator for dozens of game design companies worldwide, contributing to projects across a wide range of genres and TTRPG platforms including Dungeons & Dragons and Pathfinder RPG.

Read Justin's Web Journal...

Dungeon Challenge Updates...

I have worked and licensed with dozens of publishers, studios, and game companies. Here is a list of a some of them:

     • 2 King Games
     • AAW Games
     • Adventureaweek.com
     • AetherCon Convention
     • Avatarart
     • EN Publishing
     • Dark Naga Adventures
     • Dorks of Yore
     • Dread Unicorn Games
     • Dreamscarred Press
     • Dungeon Crate
     • Gallant Knight Enterprises
     • Ice & Dice Gaming Convention
     • Jon Brazer Enterprises
     • Kobold Press
     • Legendary Games
     • Lone Wolf Development
     • Lunar Productions
     • Mentats of Gaming
     • Mongoose Publishing
     • Mythic Design
     • Mythoard
     • Oaken Dragon Press
     • Obsidian Portal
     • Paizo
     • Playground Adventures
     • Rogue Genius Games
     • SmiteWorks
     • TPK Games
     • The Grim Press
     • Wyrmworks Publishing

Grim Press

Adaptable NPCs Calamity Edition

Adaptable NPCs II

Ettinling Package

Traps Trammels & Triggers