In this extended edition of the first Sonic game, the first thing that sets this version apart is the Advance-like over world where Sonic can go into different levels by finding and entering rings instead of the game instantly going from act 1 to act 2 to act 3. The clock has been altered from the original to the one used for Sonic CD. But other than those two features featured, this is the same first Sonic game some of you have been playing for years on the Sega Genesis or on another gaming system. I would give this a higher rating if not for the fact this is merely a demo with just Green Hill Zone and not a full, completed game. I find the over world was a great addition, perhaps with the addition of the lightning, bubble and fire TV sets from Sonic 3 for this game it would be given by me a 10/10 rating. To the developer(s): keep up the great work and I look forward to seeing the full Sonic extended edition ROM on this website (or another website) in the near future.

Note: to use the spin dash feature, you have to hold either the a, s or d keys (with normal Genesis configuration) for about two seconds and wait for the screen to move either left or right to spin dash. Revving for a spin dash will have no effect unless the screen moves.