What are the release dates for My Little Pony Crystal Princess The Runaway Rainbow - 2006 VG?

There is no game called "My Little Pony Crystal Princess The Runaway Rainbow" for any platform, including the 2006 era for the VG (video game) platform.

It's possible there is a misremembered title, or it's a fan project, but there is no official release information available for a game with that name.