I was planning on using text documents and video briefings animated within the game's engine as a reward tactic in my near future game idea. These would be found throughout the black forest and would be added to the player's database when recovered. The documents would range from magazine articles to newspaper clippings, military briefings and journal entries. The video briefings would be strictly military, and would come from sources such as Terratech and the major military forces involved in the conflict. (Europa, Russia and the American Republic.) Most of these would be serious in nature, but would usually have some sort of comedic element. (The Terratech briefings, for instance, are always interrupted before they finish by some sort of chaos breaking loose in the lab.)
I have a few questions for how to handle this mechanic properly.
1. Should these files be accessible to the player permanently, or just on that one save file? If the former, should it be accessible in new save files or only from the main menu and the saves it has been recovered in?
2. About how long should the files be? What about the video briefings? I'm less looking for an average here and more for an upper and lower limit.
3. How hard should they be to get? Should they be well-hidden Easter Eggs, should they practically rain from the sky, or something in between?
4. Obviously, the text documents are going to be more common, but this mean that the videos are harder to retrieve or simply fewer in number?
5. Are these good enough to serve as rewards on their own, or should they come with other rewards like items and currency?