Plan your game where you build it. One connected workspace for design, worldbuilding, narrative, and project knowledge inside Unreal Engine.

Documentation: https://www.embeddedtechno.com/pages/GDDS

Support: https://www.embeddedtechno.com/pages/support

Game Design Document Studio is a complete game design, worldbuilding, narrative, and project knowledge workspace built directly inside Unreal Engine.

Many development workflows end up split between design documents, spreadsheets, worldbuilding tools, dialogue editors, and other external applications. GDDS was created to bring that planning and documentation into the Unreal project itself: one connected workspace where ideas, systems, story, and production information can be organized and linked together.

At its core, GDDS is a structured game-design knowledge base. Characters, locations, factions, lore, quests, dialogue, gameplay systems, items, abilities, timelines, and production records can reference one another through searchable links, creating a connected source of truth for the project.

GDDS integrates with Unreal and the Content Browser, but it is primarily an authoring, planning, documentation, and validation tool. It is not intended to replace a dedicated dialogue, quest, inventory, or gameplay system. Instead, it provides a place to design those systems, document how they should work, connect them to the rest of the project, and keep that knowledge available inside Unreal while the game is being built.

Core Features

• Complete Game Design Document and project knowledge-base workspace

• Worldbuilding, lore, glossary, characters, bestiary, factions, locations, quests, gameplay features, items, abilities, and more

• Customizable record templates, sections, and fields

• Searchable references between related records

• Unreal Content Browser asset references

• Visual dialogue, quest, story, and relationship graph editors

• Conversation Writer for branching dialogue planning

• Dialogue and Quest Playtest Simulator

• Typed variables, conditions, actions, and state-machine design

• World maps with database-linked location markers

• Project calendars, historical timelines, periods, and events

• Voice production and localization tracking

• Visual development and production records

• Project-wide validation with direct navigation to issues

• Complete project export and import in json

• Optional compiled runtime database for projects that need design data in-game

• Included Divine Comedy sample project demonstrating the full workflow

• No third-party plugin dependencies