Favourite Video Game Plot?

[Zaari]

Definitely Majora's Mask. I've yet to see a game with a more unique and original storyline. My favorite part is probably the fact that when you first see/hear about the game, it looks very harmless and cheerful. But the more you dig into the plot, the more demented everything becomes. I actually learned something very recently about the game's plot that legitimately disturbed the shit out of me.