GM obfuscation is a category of techniques to deceive the players for some game-related purpose. Examples include: * Making a die roll, even though they do no not have a particular threat in mind * Taking aside players, even though they do not have any secret information for them * Recruiting players to play creatures that have impersonated their PCs * Playing dumb * Pretending they meant to do something all along * Uncertainty game-mastering * Offering up red herrings Reasons this is done include: