
However, by destroying Eggman's robot teleporters in the past, the future automatically becomes good: all advances in technology will be working to the environment's benefit, and the robots in all three time periods are destroyed (mostly some will remain in the present). The scientist seeks to use the Time Stones to rule over time itself. To witness this phenomenon, Sonic journeys to Never Lake, but is shocked to find Little Planet encased in a metallic floating prison, chained to a mountain carved with the distinct face of Dr. Little Planet is the home of seven miraculous Time Stones that have been reported to cause wonders, such as preserving the natural world from the passage of time. For one month out of the entire year, it appears over the Never Lake. This time, Sonic explores Little Planet, a tiny world orbiting Sonic's home planet. The animated opening and ending sequences were done by Studio Junio and Toei Animation. This game introduced two Breakout Characters: Sonic's pink fangirl Amy Rose, and the Evil Knockoff Metal Sonic.


While it was released after Sonic the Hedgehog 2, the games were developed in tandem, and as a result, have some notable differences between them the Compilation Rerelease Sonic Origins would later definitively confirm that CD takes place before Sonic 2, helping explain at least a few of the discrepancies. Sonic the Hedgehog CD (also known as Sonic CD) is a Sonic the Hedgehog game released for the Sega CD in 1993 as a direct sequel to the original 1991 game.
