de Chocobo). The game also features downloadable content, allowing players to purchase new songs and stages from the Nintendo eShop. Plot The game follows the events of the gods Chaos and Cosmos, a similar plot to Dissidia Final Fantasy for the PlayStation Portable. The space between the two is called Rhythm, which gives birth to a crystal that controls music. Chaos causes the crystal to become disrupted, and the only way to return it to normal is to increase a music wave known as "Rhythmia" (known as "Rhythpo" in the Japanese version). As such, various characters from the Final Fantasy universe are brought together in order to harness the power of Rhythmia. Development and release Theatrhythm Final Fantasy was proposed by Square Enix's Ichiro Hazama after working in the film Final Fantasy VII: Advent Children. It was originally envisioned for the Nintendo DS but development faced difficulties due to the console's limitations. Upon seeing the Nintendo 3DS, Hazama once again gave his idea to his superior Tetsuya Nomura and the company Indieszero, which resulted in the production for the game on the Nintendo 3DS. For the music selection, the Square Enix staff made a music survey during development of Dissidia Final Fantasy although most of the chosen songs were from Final Fantasy VII. All the songs were included in their original versions with the exception of the "Gurugu Volcano" from the first Final Fantasy which is based on the PlayStation release since the original version was shorter. The idea of using the gods Chaos and Cosmos from Dissidia was proposed by Nomura as both Hazama and he had worked in such game and wanted to continue using them. The trademark "Theatrhythm" was filed near the end of E3 2011 by Square Enix. Theatrhythm Final Fantasy was officially announced for release exclusively on the Nintendo 3DS handheld game console in the Japanese manga anthology Weekly Shōnen Jump. It was originally announced for release only in Japan. Square Enix Japan created an official website to promote the game. Rumours came up that Theatrhythm Final Fantasy would be developed by Jupiter; however, it was later confirmed on the official website that it would be developed by Indieszero. The character and monster designs are designed by MonsterOctopus, who also designed the Kingdom Hearts avatars found in Kingdom Hearts Mobile and Kingdom Hearts Re:Coded. Reception In the first week of release in Japan, sales of