Baketsu Daisakusen
Nintendo's Baketsu Dasakusen is a horse-racing derby simulation. This seemingly niche genre is one Nintendo has long supported in Japan. A game of this nature is usually targeting the older gamer; apparently Nintendo wants older game players to give the Game Boy Advance a good spin.
Believe it or not, the horse racing genre is huge in Japan. Ascii's Derby Stallion franchise ranks amongst the most popular in the land of the rising sun. Nintendo has been quiet on the game's actual details, but Nintendo has confirmed the game will make use of the cell-phone adapter for online functions. Though a US release seems very unlikely, Nintendo plans to release this title soon after the Japanese launch.