Mobile Golf

Mobile Golf (モバイルゴルフ) is a golf game developed by Camelot Software Planning and published by Nintendo for the Game Boy Color exclusively in Japan in 2001. It is the third official game in the  series and its RPG-like style is similar to other handheld Mario Golf and sports games. Although the title doesn't contain the word "Mario" in it like most other games in the series (due to the product being a test for the Mobile GB Adaptor, which could be used to play multiplayer games within a mobile phone network.), Mario is still playable along with some other Mario characters.

Like Mario Golf, it has four human characters to choose from at the beginning. They must be trained in the same fashion by playing golf in an RPG manner and gain experience. Players are also given the ability to unlock characters as well by beating them, such as the four champions of the game: Bean, Rozary, Powert, and Bird.

Several human characters from Mario Golf (Game Boy Color) can also be unlocked and played in story mode. Unlocked Mario characters, including Mario, Peach, Yoshi, and Foreman Spike, can be used during multiplayer games when connected using a mobile phone network. Note that service using the Mobile Adapter GB ended some time after the game was released.