IGN: A ridiculous number of games nowadays track your behavior to the nearest inch. It started with RPGs and has since migrated to sandbox games, shooters, platformers, you name it. Even Need for Speed Shift tailors challenges based on your recklessness. Maybe they call it a morality system, or reputation, or notoriety, or maybe your character's eyes just start glowing red after you behead your third orphan. Whatever the tag, you've got to be really careful or really careless about everything you do, because odds are it's going to change the game you're playing, and maybe not in ways you want. Or maybe not in all the ways it should.