Here's something to chew on for now as I work on Origami Island! This serves as an example of applying what I go over in the GSE Animation editing section of my Sonic Sprite Tutorial! https://scratch.mit.edu/projects/524152767 Instructions are in project.
@tomicool made the original engine and @hamimasian made 'NGSE'. The music is Angel Island Zone from Sonic Mania. The Sonic Mania sprites were ripped by @MunchJrGames