The Design Document
The concept document should secure the team’s commitment to and understanding of the project, and often it will secure the funding for design and production.
At the point where design and production get the green light, a design document will need to take shape, usually springboarding from the concept document.
The design document is the bible defining all aspects of the game’s creative and technical design, design specifications, programming, asset building and management, delivery milestones, user testing, scope, and completion.
Frequently, design documents are assembled from separate creative design and technical design (or design specification) documents, and sometimes the segments ...