In this exhilarating novel, two friends--often in love, but never lovers--come together as creative partners in the world of video game design, where success brings them fame, joy, tragedy, duplicity, and, ultimately, a kind of immortality. On a bitter-cold day, in the December of his junior year at Harvard, Sam Masur exits a subway car and sees, amid the hordes of people waiting on the platform, Sadie Green. He calls her name. For a moment, she pretends she hasn't heard him, but then, she turns, and a game begins: a legendary collaboration that will launch them to stardom. These friends, intimate