Ys: The Vanished Omens (also Ys I: Ancient Ys Vanished (イース Ancient Ys Vanished, Īsu) or The Ancient Land of Ys) is the first installment of Ys, an action role-playing video game series developed by Nihon Falcom in 1987. The name is commonly misspelled Y's due to an error on the packaging of an English-language release.