Animal Crossing: Pocket Camp has only been available for a couple of days on iOS and Android devices, but it already seems to be doing the business. The game, a mobile sim developed by DeNA that's inspired by the famous Nintendo franchise, has been downloaded between 5 and 10 million times on Android devices according to data released by Google Play. At the moment we don't have any data relating to the iOS version of the game.
Animal Crossing: Pocket Camp is a free-to-play game where players can create their own campsites where you can invite many of the Animal Crossing world's characters and visit the campsites belonging to your friends. You can download the app directly from App Store and Google Play if you want to see it for yourself.
Thanks, Nintendo Everything.