In addition to the other's already listed, DataPacRat's Myou've Got To Be Kidding Me follows a perspective of a character thrown into a setting and trying to analyze the basic rules in order to optimize them. There are some interesting concepts, but I don't know that I can recommend it : It has not been updated in over a year, and was part of some big conglomeration of fanfic writers which had some pretty widely varying quality (although thankfully nothing necessary to Myou've plotline).