Build rules-legal characters in an instant, query your manuals with cited answers, generate NPCs and portraits. The intelligence that sits by your side — session after session.
Less prep, more play. GMB keeps the rules, the numbers and the inspiration within reach.
Complete, rules-legal sheets for Vulcania and D&D 5e/Eberron in a few clicks — with a ready-to-download PDF. The engine computes and validates every number for you.
Ask about a rule, a monster, a piece of lore: get answers grounded in the manuals, with the book and page cited. No more flipping pages mid-session.
Give every character and scene a face with images generated in our style. Evocative PNGs and settings, in seconds.
Dice roller, initiative tracker, generators for NPCs, towns and encounters. All ready, always at hand, free behind your account.
Pick race, class and level: the engine assigns points, applies the rules and validates every number. No hand-math, no mistakes — a complete official sheet, ready to download.
Vulcania · D&D 5eGenerate portraits in our style and setting images in seconds. Memorable characters and NPCs ready for the table, saved to your gallery.
Rules, weapons, conditions, monsters, lore: ask the question and get an answer grounded in the manuals — with the book and page cited. No more flipping pages mid-session, no made-up answers.
Weekly credits that refill for everyone. Paid plans give more credits, more space and more power — not hidden features.
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