Thinking about it, OPs concept may have potential for a game. Something in the style of Introversion's "Darwinia" (I highly recommend it btw.), but with first person gameplay. The linked video could perfectly serve as an intro to the game. It could have a very immersive effect, e.g. no menus or splashscreen or anything. The gameplay could adopt some elements from the "Myst" series. The setup for these games could easily be a passage of the player's character to the netherworld anyways.

sigh damn. Too many ideas, not enough time. Imagine if you could program in your afterlife. Imagine all the projects you could do with infinite amounts of time. Humanity's progress would get another exponential factor attached.