Sarah Allen, Mightyverse @mightyverse, AltConf, June 2015 Making your app fun to use requires more than sprinkling a little gamification on top. It requires thoughtful imagination and experimentation. In this talk, I highlight some expert perspectives on theories of play and behavioral psychology, and and how we can apply these ideas in mobile app design. I also share prototyping techniques and how to validate whether a design will actually be fun.