McGonigal has a vision that games will change the world. How? They take us on epic missions, present us with urgent challenges, and offer exhilarating rewards. A pioneer in alternate reality games that aim to improve real lives and solve problems such as poverty, hunger, and climate change, McGonigal includes EVOKE, Superstruct, and World Without Oil among her best-known projects. MIT Technology Review named her one of the top 35 innovators changing the world through technology. Follow McGonigal on Facebook or Twitter @avantgame.