Fetch Quests of the Dead. With the exception of the main story, I think about every side quest I've done has involved retrieving something or someone, be it herbs or a lost mother. Most of the other tasks are usually more important things that people want me to accomplish, and are therefore part of the main story.

But wait, doesn't like the first half of the game consist of you trying to fetch a drug called Antizin for ordinary citizens holed up in a tower?

And isn't the plot driven by a MacGuffin in the form of a file that you're supposed to snatch from a psychopath?

Well, crap. The whole game really is one big series of fetch quests.