original xbox

What are some games that have additional features (like being able to play custom music in GTA) or additional content (like Genma Onimusha, Fatal Frame 1 and 2, Dead or Alive Ultimate) on the OG Xbox that their PS2 counterparts did not?

The XBox doesn't have tons of exclusives. What it has is a hell of a vibe. Some of the 6th gen's most forgotten gems just feel RIGHT on the original XBox. Have Whiplash as an example of what I mean.