2008. On June 20, 2011, the game's website temporarily crashed after the company let the Club Penguin domain name expire. In September 2011, one of Club Penguin'''s minigames, Puffle Launch, was released on iOS as an app. Merrifield commented: "Kids are going mobile and have been asking for Club Penguin to go there with them." In late 2012, Merrifield left Disney Interactive to focus on his family and a new educational product, Freshgrade. Chris Heatherly took Merrifield's former position. The company dropped the words "Online Studios" from its name in 2013. As of July 2013, Club Penguin had over 200 million registered user accounts. In 2013, Club Penguin hired singer and former Club Penguin player Jordan Fisher to record a song entitled It's Your Birthday, to commemorate Club Penguin's 8th anniversary. Decline and discontinuation (2015–2017) In April 2015, it was revealed that Disney Interactive had laid off 28 members of Club Penguin's Kelowna headquarters due to the game's declining popularity. The company's UK office in Brighton was shut down around April 17, 2015. Some employees in the Los Angeles office were also let go. Disney Interactive replied to Castanet on the layoffs: "Disney Interactive continually looks to find ways to create efficiencies and streamline our operations. As part of this ongoing process, we are consolidating a small number of teams and are undergoing a targeted reduction in workforce." On September 2, 2015, Club Penguin closed down the German and Russian versions of the site. A spin-off mobile app, Puffle Wild, was removed from the App Store and Google Play the same day in order to allow Disney Interactive to focus on Club Penguin. On January 11, 2016, the Sled Racer and SoundStudio apps (the former being an original game and the latter being a port of a game on the website) followed suit. With the closure of Disney Interactive in 2015, Club Penguin side-projects wound down to allow a streamlined effort to focus on the core Club Penguin experience; this involved the layoffs of 30 Disney Studios Canada staff. On January 30, 2017, Club Penguin announced that the current game would be discontinued on March 29, 2017, to make way for its successor, Club Penguin Island. Membership payments for the original game were no longer accepted as of January 31, 2017, with paid members slated to receive emails about membership and refunds. It became popular in the final weeks of