Detailed lists of vehicle parts, interior specifications, and even the number of cars intended for specific city zones.
The primary document, known as version 1.39, serves as an instruction manual for the development team. It covers:
In late 2024, a significant 58-page leak emerged via GTAForums and Internet Archive detailing a scrapped multiplayer mode. This "GTA 3 Online" document, dated May 2001, revealed features that were a decade ahead of their time: The Design Behind GTA 3