Video games are one of the high points in entertainment today, and like movies there's originality in them. But also like movies, the makers of such games seem to be running out of ideas. I've been seeing way overused story traits in video games today. To name one: a person who works for a company and/or government and then finds out things out about them that they didn't know and turns against that company. While overused things may be bad, some people have managed to use them in a way where you don't think its been used before. For example, the Metal Gear series.
Both Solid Snake and his predecessor Big Boss/Naked Snake worked for their government and also went against them, but in quite different ways. Big Boss trying to set up a nation for Soldiers and Solid Snake trying to rid the world of the mobile nuclear equipped bipedal tank, Metal Gear. While both are Enemies they are also enemies to the nation they once served even though Solid's intentions are for the betterment of mankind.