The game has an unused theme entitled "bgm_captain".
This is the only Mario-related Wii game to never be released in Europe and/or Australia in physical form. This is due to the fact that it was in production at the same time as "Mario Kart Wii" that was released in all four regions in April of the same year.
Unlike "Super Mario RPG: Legend of the Seven Stars" that was also unreleased in Europe and Australia, this one had a "Nintendo Selects" re-release in 2011 - which the earlier game didn't back when the re-releases of popular titles was known as "Player's Choice Million Seller" as the SNES platform was aging at the time before ceasing production of new units and game titles.