: 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
: It featured both the original Japanese/European and the American soundtracks, letting players choose their preference. Hidden Secrets & Cheats which provided a smooth 60fps experience
The PSN version retained several famous "Easter Eggs" and hidden menus:
: Entering 07-07-07 in the sound test grants access to a hidden challenge. Availability Status
: This version used Christian Whitehead’s Retro Engine , which provided a smooth 60fps experience, widescreen support, and the ability to play as Tails .