It-s time to usher the past into the future in this enhanced recreation of Sonic CD! Sonic travels to the distant shores of Never Lake for the once-a-year appearance of Little Planet - a mysterious world where past, present, and future collide through the power of the Time Stones that lie hidden within it. Sonic arrives only to find the once beautiful world imprisoned beneath a twisted metallic shell. His arch-nemesis, Dr. Eggman, has come for the Time Stones and with them, will soon have the power to control time itself! In order to put an end to Dr. Eggman-s nefarious schemes, Sonic must use the power of Little Planet to travel through time; breaking Dr. Eggman-s hold over the future by destroying his machines in the past and recovering the missing Time Stones!
Features:

Classically Updated: Sonic CD has been restored to bring you a classic gaming experience in 16:9 native widescreen with gameplay optimized for today-s consoles and mobile platforms!
Play at Home- And earn Xbox Live Achievements, PSN trophies or Steam Achievements!
Or On the Go! Featuring GameCenter achievements, leaderboards, and Retina Display for iOS and Xbox Live trophies and leaderboards for WM7
By Popular Demand Sonic CD now features the original, acclaimed Japanese soundtrack!