This page contains Sonic CD Unlockables for iPhone - iPod called "Sound Test" and has been posted or updated on May 6, 2013 by mattyman222. Let us know what you think of this Unlockable by thumbs voting. Note: This apple iPhone game app may also be compatible with the game app for apple iPad.
Beat special stage time attacks in less then 4 minutes to unlock the Sound Test.
- Hidden artwork 1: PGM 12, DA 11
- Hidden artwork 2: PGM 12, DA 2
- Hidden artwork 3: PGM 03, DA 0
- Hidden artwork 4: PGM 04, DA 2
- Hidden artwork 5: PGM 11, DA 0
- Secret special stage: PGM 07, DA 07
Back to all Cheats
Stuck on this game? Set a specific, clearly defined question and let others answer your question or view answers to previously asked questions. If you think you are an Sonic CD expert then please try to help others with their questions.