The biggest concern surrounding consistency here is the use of game names in text, section headings and page titles. For example, Grand Theft Auto: Vice City is the full name of the game, so absolutely must be used on that page. However, on pages about that game, do we really need to use the full title. Page titles like "List of Missions in Grand Theft Auto: Vice City" are cumbersome to read and to type. Shortened titles like Missions in GTA Vice City are easier in both of those respects. There are many choices of title for that page, ranging from a long one (List of Missions in Grand Theft Auto: San Andreas) or short ones (Vice City Missions). See the Style Guide for details more on how an article should be written/laid out.