Wii game encounter

I was shopping for a game on the wii, mario party 8, and this struct me as strange. I was use to all of the games instructions being in mainly english but not with this wii game. The details on the back were mainly in spanish! This is the first time that I had encountered this but it was okay. On the back it had one sentence in english and then a long summary in spanish about the game. This was an eye opener that not all games are english revolved.