Sonic Team sought to re-imagine the most popular aspects of the franchise in high-definition, and developed the game using the Hedgehog Engine. It features two gameplay styles: 'Classic', which plays from a side-scrolling perspective like that of the original Sega Genesis Sonic games, and 'Modern', 3D levels similar to those in Sonic Unleashed (2008) and Sonic Colors (2010).ĭevelopment of Sonic Generations began following the completion of Unleashed. Produced in commemoration of the 20th anniversary of the Sonic the Hedgehog series, the game follows Sonic and his sidekick Tails as they form an alliance with their past selves. Sonic Generations is a 2011 platform video game developed by Sonic Team and published by Sega for the PlayStation 3, Xbox 360, Nintendo 3DS, and Microsoft Windows.