Adding wireless capability to a device is challenging. Nintendo introduced Nintendo Wi-Fi Connection to enable players to play games with people all over the world, was launched worldwide nearly simultaneously. MARIO KART DS, ANIMAL CROSSING: WILD WORLD, and TONY HAWKS AMERICAN SK8LAND all support Nintendo Wi-Fi Connection and in its first week of availability in the United States, nearly half of all the people who bought MARIO KART DS logged onto Nintendo Wi-Fi Connection to race against people around the world. What does this mean for the future of the service? As project leader of Nintendo Wi-Fi Connection, Takao Ohara addresses what went right and what went wrong in implementing Wi-Fi on the Nintendo DS, and also explores the lessons learned that can be applied to consoles as well, including Nintendos next-generation console code-named Revolution. Ohara also offers tips for developers who want to make their games Wi-Fi compatible, with the ultimate goal of getting new people involved in playing videogames.