Company: Good-Feel

Good-Feel being the development company behind Princess Peach: Showtime! was not officially revealed until the day before the game's release, where it was discovered via the game's credits. It was also revealed through the credits that the game had been directed by Good-Feel president Etsunobu Ebisu, who had not directed a game since Mystical Ninja Starring Goemon in 1997. Two weeks prior to this, however, Good-Feel's involvement was leaked via the code from the game's demo version. When asked who the development company was, Nintendo merely stated that it would be revealed in the game's credits.