Show by Rock!! (stylized as SHOW BY ROCK!!; also known as Show by Rock!! Gonna be a Music Millionaire!) is a mobile rhythm video game developed and published by Geechs (later Edia), in conjunction with Sanrio. It is Sanrio's first-ever franchise project aimed for the older demographic and the company's first music-based franchise. The game was released on July 30, 2013 for iOS and on June 27, 2014 for Android devices. In January 2018, development transferred from Geechs to Edia with its service discontinued on December 26, 2019. A successor to the original game was later developed by Now Production and published by Square Enix on March 12, 2020 on all mobile platforms with its service is set to shut down in November 30, 2022.