Sonic & All-Stars Racing Transformed (USA) (ソニック & オールスターレーシングトランスフォームド) is a kart racing game developed by Sumo Digital and published by Sega. It is the sequel to the 2010 game Sonic & Sega All-Stars Racing. The game features characters from Sega franchises such as Sonic the Hedgehog, Jet Set Radio, and Super Monkey Ball. Players race on land, sea, and air in transforming vehicles. The game features a variety of single-player and multiplayer modes, including Grand Prix, Time Attack, and Battle Race. Players can also customize their vehicles with a variety of parts and upgrades. Sonic & All-Stars Racing Transformed was released in 2012 for the Nintendo 3DS, PlayStation 3, Wii U, Xbox 360, and PlayStation Vita. It was met with positive reviews, with critics praising the game's visuals, controls, and variety of content.