: Entering code 46-12-25 in the sound test displays a screen with distorted Sonics and a message in Japanese that translates to "Fun is Infinite — Sega Enterprises" .
: You can currently play the remastered Sonic CD as part of the Sonic Origins Plus collection on PS4 and PS5, which includes all the features of the PSN version plus additional content. Sonic CD PSN
: To unlock the Sound Test, you must beat the Time Attack special stages in under 4 minutes. Once unlocked, specific code combinations reveal hidden screens. : Entering code 46-12-25 in the sound test
The PSN version retained several famous "Easter Eggs" and hidden menus: : The standalone digital version was delisted from
: It featured both the original Japanese/European and the American soundtracks, letting players choose their preference. Hidden Secrets & Cheats
Often cited as one of the best platformers in the franchise, Sonic CD is famous for its , allowing players to jump between Past, Present, and Future versions of every stage.
: The standalone digital version was delisted from the PlayStation Store in May 2022.