sonic and the all-stars cast line up on the starting grid once again to battle for supremacy in the ultimate race. compete across land, water, and air in incredible transforming vehicles that change from cars to boats to planes mid-race. master your driving skills as you drift, barrel roll, and boost to overtake your rivals, or use your weapons tactically and unleash your all-star move to gain the winning advantage.it's not just your fellow racers you need to watch out for: as the road falls away beneath you, or the river runs dry, new routes emerge and your vehicle transforms to take advantage of the terrain. discover alternative routes and shortcuts as you perfect the course in this adrenaline-fuelled dash to the finish line - racing will never be the same again. this is no ordinary race. each character is equipped with their own unique vehicle that can transform into a car, boat, and plane to take advantage of the changing terrains.take to land, sea & air as you race through 16 dynamically changing courses inspired by sega's illustrious gaming history.race as one of the 20+ legendary all-stars. the starting line-up has been transformed as new iconic characters from the world of sega join the race.utilize an arsenal of devastating weapons which require skill to aim, shoot, evade and block.