极限摩托车自行车游戏 is a free iPhone game developed by Muzammil Rasheed. Embark on an exciting journey with Tristan, a 38-year-old bicycle racing and customization enthusiast who lost a leg in an accident. Despite the setback, Tristan's passion for bikes has never faded, but it has waned over time. When his stepbrother, Ralph, returns from France, he encourages Tristan to start building a new bike for himself. Unable to do it alone, Tristan decides to teach Ralph and his girlfriend, Amy, how to build a bike. Ralph doesn't even know how to ride a motorcycle, so Tristan gives him his old bike to practice on, emphasizing the importance of following the rules of the road.