Released on 7/26/91, this title marked the beginning of Sonic's many adventures to come. The title was a smash-hit for its high-speed gameplay, unique stages, eye-catching graphics, and catchy songs! But more than anything, it was Sonic's cool and awesome personality that captured the hearts of many around the world. SEGA's Sonic isn't just a loveable game character, but he has also made a name for himself in numerous comics, animations, and other media. Protect the poor animals and the Chaos Emerald from the vile clutches of the evil genius Dr. Eggman!
* The release date is for the Japanese version.

Released on 9/23/93. This title was a spin-off of the Sonic series made for the Mega-CD. Use the time warp to travel to the past and the future in this ground-breaking and revolutionary 2D masterpiece.
Amy, Sonic series' spunky heroine, and Metal Sonic, the super advanced robot created by Dr. Eggman, make their video game debut in this title!
* Amy was called Rosy the Rascal at this time.
* The release date is for the Japanese version.

Released on 11/21/92. The blue blur returns, bringing his little fox buddy Tails for more speed and more exhilarating fun! Control Tails and run alongside Sonic or compete against each other in a split-screen race! Plus, the fresh and innovative 3D-like Special Stages will have you glued to your screen.
* The release date is for the Japanese version.

"Sonic the Hedgehog 3" was released on 5/27/94 and "Sonic 3 & Knuckles" was released on 10/18/94. Embark on an adventure-packed journey with the appearance of Knuckles, Sonic's red echidna rival! All characters get new abilities for double the fun.
These titles were originally released in two parts, but are now combined into a single title!
* The release date is for the Japanese version.