: For the first time, you can unlock Sonic's sidekick, Tails, after completing the game once.
: The remaster utilizes the Retro Engine, providing smoother gameplay and fixing bugs from previous ports (like the double-speed special stages found in the Gems Collection). SonicCD PSN
One especially useful feature is the , which lets you switch between the original Japanese/European score and the North American version. Because these two soundtracks are vastly different in style, having the choice ensures you can enjoy the one that best fits your preference. Other valuable features in this version include: : For the first time, you can unlock
The PlayStation Network (PSN) version of —a 2011 remaster by Christian Whitehead—includes several features that make it the definitive way to play. Because these two soundtracks are vastly different in
: You can choose between the original "Sonic CD" style spin dash or the more familiar "Sonic 2" style.