Arrow keys to move and space to start. The island is called Emerald Island. ( I tried everybody!) X to Spin-dash and Z to Jump. You can also duck, but why do that if you press X to Spindash? Knuckles: Incomplete. Tails: Incomplete. Sonic (moveset): 80 percent. The Spin-dash is kinda broken
NOT the real SJJ. Here's a link to the SJJ studio: https://scratch.mit.edu/studios/26837358/. Not really a link though. Credit goes to CA5B and the rest of the SJJ team for the logo, sprites, music, background and logo. superkalvis (now FlamingFoxProd), made the menu select sprite. And of course, Sega & Sonic Team.
