: 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).
: You can choose between the original "Sonic CD" style spin dash or the more familiar "Sonic 2" style. SonicCD PSN
: Competitive players can use the built-in Time Attack mode to track their fastest runs and compare them on global leaderboards. Taking Sonic CD Out For Another Spin - Game Informer : The remaster utilizes the Retro Engine, providing
: For the first time, you can unlock Sonic's sidekick, Tails, after completing the game once. you can unlock Sonic's sidekick