if you do not like sonic flash game , 8 bit sonic 1, tails.exe, or sonic moto. then there are 7 backup games right here click on the links to play them
https://www.playfg.com/angry-sonic-game.html
https://www.playfg.com/sonic-in-angel-island-game.html
https://www.playfg.com/sonic-on-clouds-game.html