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