Ragnarok Odyssey is a role-playing video game for the PlayStation Vita system. It is based on the universe of the MMORPG Ragnarok Online, containing many elements of Norse mythology. It was released in February 2012 within Japan, August 21, 2012 in South Korea, October 30, 2012 in North America and February 20, 2013 in Europe. An updated version titled Ragnarok Odyssey Ace was released for PlayStation Vita and PlayStation 3.

Nobuo Uematsu is a Japanese composer and keyboardist best known for his contributions to the Final Fantasy video game series by Square Enix. A self-taught musician, he began playing the piano at the age of twelve, with English singer-songwriter Elton John as one of his biggest influences.