Sonic Lost World (ソニックロストワールド) is an action-adventure/platform video game developed by Sonic Team for the Wii U and Nintendo 3DS platforms and published by Nintendo in Europe and Australia and Sega in North America and Japan. It was released first on October 18, 2013 in Europe and later in October in other regions. It is part of the Sonic the Hedgehog series and is the first title in the series on an eighth-generation home console.