Use the arrow keys to move Sonic Collect rings to stay in your Super form (they drain by 1 every second!) Move Sonic into Chaos in order to attack him head on! Watch out for the obstacles; building pieces slow you down, while energy balls take some of your rings!
I found this old remix I made in the sea of my unshared projects. I fixed it up a bit so I could share it :) An obvious thanks to SEGA for creating Sonic, and another obvious credit to sonicelpuercoespin for the original project! Credit to: @MunchJrGames for the Pocket Adventure sprites of Sonic NICKtendo DS for the Perfect Chaos sprite Auxpert for creating the 8-bit rendition of Open Your Heart: https://www.youtube.com/watch?v=G5sZ9N7PgQE