...game theory has the wrong name. It is a theoretical tool rather than a theory in and of itself. Because of this, Mandel is correct that it is possible to devise game-theoretic models that lead to contrasting predictions. However, the virtue of game theory is that the differences made in starting assumptions, institutional rules, and causal processes are laid bare. One can then argue about how realistic the assumptions, rules, and processes are.
You can't get enough of Tom
Dan Drezner, a political scientist/blogger that was just denied tenure at Chicago, has a nice post on Schelling's work, the Slate article criticizing Schelling's role in the Vietnam war, and game theory's perception in the mainstream press.