Aikatsu! 365 Idol Days is a single-player casual and rhythm game in which players participate in idol activities, perform on stage, and manage their virtual idol careers through rhythm-based gameplay mechanics. In this game, players follow the journey of aspiring idols in a vibrant, fictional world where they can customize their characters, participate in various performances, and build their reputation within the idol industry. It stands out with its focus on the theme 'Real Idol Adventure,' offering an immersive experience that combines rhythm gameplay with simulation elements, allowing players to experience the life of a real idol on the Nintendo 3DS platform.