The ultimate celebration of 20 Years of Sonic gaming, Sonic Generations delivers the definitive experience for Sonic fans new and old.Sonics universe is thrown into chaos when a mysterious new power comes into force, creating time holes which take Sonic and his friends back in time. Whilst there, Sonic runs into some very familiar characters from his past including a younger version of himself! Now they must team up to defeat their enemies, save their friends, and find out who is behind this diabolical deed.