ancient ys vanished

Comprises the first two entries of the Ys series, which were rereleased throughout many platforms over the decades as a bundled duology:

Ys I: Ancient Ys Vanished (1987) (alternate subtitle: The Ancient Land of Ys)
Ys II: Ancient Ys Vanished - The Final Chapter (1988)

This tag implicates ys (learn more).