A modern darling of edutainment that is a big public success would be Duolingo. Their focus on gamification is deeply studied and widely appreciated. In an interview the founder was asked about the conflict between gamification/engagement and education. To which Luis (founder and ceo of Duolingo) responded they always pick gamification/engagement i... See more

Duolingo, which was also driven almost exclusively by word of mouth, optimized for free user growth: “By offering all of its learning content for free, Duolingo built a massive user base through word of mouth and no paid marketing. This also helped us build a growth revenue loop: Building a free and fun product → more users → more subscribers → mor... See more