G1 Grand Prix (Japan) (日本語版 G1グランプリ) is a motorcycle racing game developed by Genki and published by Spike for the Nintendo 3DS. Players take the role of a rookie racer and compete in the Grand Prix, a series of races held in various locations around the world. The game features a variety of tracks, each with its own unique challenges and obstacles. Players must use their skills and strategies to win each race and move up the ranks of the Grand Prix. The game also features a wide range of customization options, allowing players to customize their bike, rider, and race settings. G1 Grand Prix (Japan) is an exciting and challenging racing game that will keep players engaged and entertained for hours.