Presenting, an early prototype of Sonic the Hedgehog CD for the Sega CD. This prototype was featured at the Yuusei Sega World event in 1992, which was the very first public appearance of Sonic CD in the world. The prototype only features one zone (Palmtree Panic, known as "Salad Plain Zone" in this prototype), but many differences - including a Redbook audio track of the past!
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