@BillyBnMOfficial In PAL regions, the OG Xbox more or less died when Need for Speed Carbon, Call of Duty 3, Tony Hawk's Project 8 and Superman Returns were released in November 2006, those were the last big games. The last one, Xiaolin Showdown is one of the rarest games on the console and many of the late Konami games were hard to find as it is. Looking at Ratatouille's release date, no surprise that it got skipped.

I'm actually surprised that it DID get a GameCube release in Europe considering that it was difficult getting games from around late 2004-2005 onwards from personal experience. Wonder what was that about?

You're right that the PS2 and Wii versions are much more common.

This game came out so late in the OG Xbox's life it was only sold at GameStop/EB Games.
It didn't even release in Europe, even the GameCube version released there.

You're much better off finding copies of the PS2 or Wii version