When coming up with a name for the game and eventual series, the developers were attracted to the name "Kingdom" because, to Nomura and his team, the game's iconic premise of the different Disney movies' stories being rendered as "Worlds" for the player to visit reminded them of Disney's theme parks, such as the Magic Kingdom and Disney's Animal Kingdom, which are segmented into different "lands" or areas for visitors to explore. However, Square had difficulty in securing the name "Kingdom" alone, so they decided to add the word "Hearts" to it because such entities played an important role in the lore of the game and series.