Disney Tsum Tsum (Japanese: ディズニー ツムツム, Hepburn: Dizunī Tsumutsumu), pronounced "tsoom tsoom", is a range of Japanese collectible stuffed toys based upon Disney-owned characters.[1] The name is derived from the Japanese verb tsumu meaning "to stack", because the rectangle-shaped toys are designed to stack on top of each other, forming a pyramid shape.[1] There are also vinyl versions of them manufactured by Jakks Pacific. The toys were first released in Japan in 2013 as a tie-in to the Tsum Tsum arcade and mobile games respectively developed by Konami and Line Corporation. Disney began to sell them in the United States in July 2014,[2] and in Disneyland Paris the following month. Around the same time, Disney released Tsum Tsum to the South Korean market, giving away icons for use on online chat systems.[3] As of 2014, 1.8 million Tsum Tsum toys have been sold.[4] As of April 2017, the franchise has reached $2 billion in sales between both merchandise and the mobile game.[5] Disney Tsum Tsum Festival, a party game based on the toyline developed by B.B. Studio and Hyde and published by Bandai Namco Entertainment, was released for Nintendo Switch in 2019.