Sonic CD, also known as Sonic CD 2011, is a remastered version of the classic game. It introduces several enhancements, including widescreen support and improved controls, offering players a more immersive gaming experience. Additionally, players now have the option to enjoy both the American and Japanese soundtracks, adding a nostalgic touch to the gameplay.

Moreover, Sonic CD introduces Tails as an unlockable playable character, providing fans with a new way to enjoy the game and explore its levels. With these added features, Sonic CD offers both longtime fans and new players an exciting opportunity to dive into the world of Sonic the Hedgehog.