Eliza Strickland in SF Weekly:
McGonigal designs games for a living, and she believes they point the way toward civilization’s next step forward. Her games are sprawling extravaganzas that suck in thousands of players and force them to pool their talents to become, essentially, one big networked brain. In the young and burgeoning genre of alternate reality games, otherwise known as ARGs, the players’ collective intelligence is applied to cracking codes, solving puzzles, and completing complex tasks doled out by almighty “puppetmasters.” McGonigal is one of the people who pulls the strings.
People play McGonigal’s games not just to escape or for indolent pleasure, but for the sense of urgent duty they invoke.