For those that want to experience all that the title has to offer, and to steep themselves in the lore,
easter eggs, stunning visuals, genre defining game play and philosophical nature of the series for the intellectually curious, this franchise and Kojima himself is known for, I would imagine the game would have at least 15 + hours of
content, and people should remember, Metal Gear does nt outshine other franchises because of quantity, its due to sheer quality.
It is considered additional bonus
content to the main
content of the game and typically features special rewards, challenges, or
easter eggs.