"The World Ends with You, released in Japan as It's a Wonderful World (すばらしきこのせかい, Subarashiki Kono Sekai, "This Wonderful World"), is an action role-playing game developed by Square Enix's Kingdom Hearts team and Jupiter for the Nintendo DS handheld console. Set in the modern-day Shibuya shopping district of Tokyo, The World Ends with You features a distinctive art style inspired by Shibuya and its youth culture. Development was inspired by elements of Jupiter's previous game, Kingdom Hearts: Chain of Memories.
In the game, Neku Sakuraba and his allies are forced to participate in a game that will determine their fate. The battle system uses many of the unique features of the Nintendo DS, including combat that takes place on both screens, and attacks performed by certain motions on the touchscreen or by shouting into the microphone. Elements of Japanese youth culture, such as fashion, food, and cell phones, are key aspects of the missions."
Source: Wikipedia, "World_Ends_with_You," available under the CC-BY-SA License.