The idea's not original, but it's nice to find a Sonic-themed one. I would've like some kind of animation though. It's Sonic after all.
Some differences were lazy, I felt, because it lacked difficulty. However, the game still required patience for me.
Other than that, I liked the song in the back. I remember the lyrics somewhat. It may get repetitive for some people, so I'd recommend more music choices.
My score is 1585.