Elsa (Frozen) of the song "Let It Go", with critics frequently calling her a "powerhouse". Attempts were made as early as 1937 by Walt Disney to adapt Hans Christian Andersen's fairy tale, "The Snow Queen", into a film. The tale focuses on two children, one named Gerda, who served as the basis for Princess Anna, and the other named Kai, who is "cursed with negativity" after his heart is pierced with a shard of glass from an enchanted mirror and is later kidnapped by the Snow Queen. However, Disney struggled with creating a believable, multi-dimensional adaption of the fairy tale's title character,
Frozen (franchise) toy-based video game "Disney Infinity" on November 26, 2013, and both figures were released separately on March 11, 2014. Additionally, Disney Mobile released a match-three game titled "Frozen: Free Fall" for iOS, Android, Windows Phone and PlayStation 4 platforms. It takes place in the kingdom of Arendelle and closely follows the original story of the film, in which players can team up with Anna, Elsa, Kristoff, Hans, Olaf, Pabbie and Sven to match puzzles with the help of each character's special power-ups. Six mini-games can be played on the Disney website. Sony released a limited-edition "Frozen"-themed PlayStation 4 console in