Have people considered how to implement "onion skinning" into games? I encountered this concept in Call of Cthulu''s gamebook. It develops games as experiences with lots of overlapping layers of plot and action. The player investigates the action and "peels away at the surface to disclose the deeper layers". In a DM run game, there is of course no limit to the amount of layers, but in a computer game they will be finite. So how can this be achieved? Clues to mysteries can abound. Which lead the player to discover other clues... Overlapping stories and conflicting perspectives: if one person tells a tale in one way, another may tell it in a very different way. Ie. Policeman vs. Criminal, Pulp Fiction etc. This is one way to generate greater depth to a situation.