Sonic and All Stars Racing Transforms is a racing video game developed by Sumo Digital and published by Sega for the Microsoft Xbox 360 console in the United States the game was released in 2012 and features a variety of characters from the Sonic the Hedgehog series and other Sega franchises each character drives a kart that can transform into different vehicle forms such as cars boats and planes each with unique handling characteristics the gameplay includes standard racing modes like Grand Prix time trials and versus races as well as a story mode that follows a series of events players can collect items during races to gain advantages such as speed boosts or defensive shields the game supports local multiplayer for up to four players and online multiplayer for competitive racing the visual style is colorful and cartoonish with detailed environments inspired by Sonic worlds the soundtrack features upbeat electronic music and classic Sonic themes the game received generally positive reviews for its engaging gameplay variety of characters and creative transformation mechanics it was added to iOctavio com on 2012 11 21