- Adaptation Distillation: The OVA version of Ys II: Ancient Ys Vanished The Final Chapter tightens things up considerably and adds a few interesting elements like a twist on the in-game reliance on magic.
- Adaptational Early Appearance:
- In canon, Dalles's first appearance is Ys II. Here, he appears during the events adapted from Ys I.
- In Ys I, Dark Fact never appeared until Adol reached his boss room. Here, he gets scenes starting after Adol defeats Jenocres.
- Dogi and Goban also appear earlier when they save Adol after he was washed ashore.
- Adaptational Late Appearance: In Ys I, Jenocres was the very first boss Adol faced. In the ova, Jenocres appears after Adol escorts Feena to Jevah's home.
- Cool Horse: Adol rides a horse when traveling from Zeptic to Minea. He, Goban, and Dogi later ride them in search of Volume Messa.
- Dies Differently in Adaptation: In the first game, Jenocres falls in battle against Adol in the Shrine. Here, Adol kills him in Minea after the crystal weakens him severely.
- Power Ballad: "Endless History", the ending credits theme from the Ys anime, which is also a vocal remix of "The Morning Glow" from the first game.
Anime / Ys