What Is Gamification?

Gamification is using ideas from video games and game design for non-game purposes. What's the difference between good and bad gamification? When am I being played and when am I being supported to learn in a fun way? Part of that is in the eye of the beholder, but there are some pretty bright lines. For example, gambling apps might use gamification to get punters to spend more than they planned or in the workplace sometimes gamification is used to surveil people.