"The vast majority of gamers play for fun. However, a growing body of research shows that games can provide more than 'just' entertainment. For example, playing games regularly is thought to benefit vision1, improve eye-hand coordination2, slow or even prevent memory loss3, and help develop problem-solving skills4. In many cases, the positive effects of gaming are seen as pleasurable side-effects of an activity that is, after all, primarily focused on entertainment. But more and more games are appearing where this side effect has become the main issue. Games where entertainment is not the primary goal. Games with a serious purpose. Serious games..."