Sonic Generations - Ao no Bouken (ソニックジェネレーションズ - 蒼の冒険) is a Nintendo 3DS game developed by Sega and released in Japan in 2011. It is a side-scrolling platform game featuring Sonic the Hedgehog, who must save the world from the evil Dr. Eggman. Players take control of Sonic as he travels through various levels, collecting rings and defeating enemies. Along the way, Sonic must also use his special abilities to traverse obstacles and complete levels. The game features a variety of levels, including classic Sonic levels, new levels, and special levels. Additionally, the game allows players to customize their Sonic character with different outfits and accessories. Sonic Generations - Ao no Bouken is an exciting and challenging game that will keep players entertained for hours. With its colorful graphics, engaging story, and fast-paced gameplay, Sonic Generations - Ao no Bouken is a great game for fans of Sonic the Hedgehog.