Miitomo
I had quite the adventure with Miitomo , and I still remember my rush to download it within hours of its release! The fact that Nintendo was finally willing to release a game (if you can call it that) on hardware other than their own was enough to get me on board immediately. The basis was simple: use a mii to connect with your friends in a pseudo-social-media pseudo-videogame crossover. The game focused on answering questions and learning your friend's answers in order to get to know each other better. Unfortunately, the amount of friends I had playing was pretty pitiful, and I didn't really end up doing much with the app until later in its life as new features were released. Upon finding out that Nintendo planned to discontinue the Miitomo service in May 2018, I decided to revisit it before it was too late. What I found was a far more complicated system with so many new options that I wasn't really sure where to start. After gathering my bearings, I was able to