The NTSC and PAL versions of the NES game have some music differences. Interestingly, the PAL version has a track for the ranking scores, while the NTSC version just reuses the main menu theme.

The game was the last NES game to be released in the US on December 10, 1994. Because of the release date, it's also the only NES game to receive an official ESRB rating, being "K-A" (Kids to Adults).

The English instruction booklet uses Birdo's Japanese name 'Catherine'.