Twisted! was planned to be released in Europe several times, but Nintendo got problems with European laws, because the cartridge contains a bit of mercury that isn't allowed in toys (and maybe also in other things).
I really can't find this souvenir in the toy room, even with
Twisted! inside, it seems really to be a region issue.
Twisted! is still listed as "TBD" on the European Nintendo site, but I doubt that it will still happen. Anyways, thanks for your answers! :-)
At least, the video is available on
YouTube, though in a bad quality. I wonder all the more about it because the uploader is from France. But the quality is so bad that I can't see if the words (not the lyrics) are in English or French. Do you see it?