Not sure what to do with your game or maybe it's been a while since you played some Sonic? Here are some links to help you get caught up with the blue hedgehog.
Itch.io games already created:
https://itch.io/search?q=sonic+the+hedgehog
SonicX cartoon show:
https://www.youtube.com/playlist?list=PLj2Ugc-vxcWEQlpeFnutiOvQ7B1KNuzLU
Hardcore Gaming 101 articles on Sonic games:
http://www.hardcoregaming101.net/series/sonic-the-hedgehog/
Sonic Mania shorts:
Retroforce Go podcast on Sonic (32 minutes in is where the Sonic stuff starts):