Your gamerDNA learns what you love about games so it can tell you what you'll enjoy about others. When you "run" your gamerDNA at a game page (like this one) the data within your gamerDNA is calculated against all the data associated with the game, in this case Alien versus Predator: Extinction, and what comes out the other side are all the things your gamerDNA has in common with the game. Pretty cool!
Remember, the more you add to your gamerDNA the better this gets.
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