double click the flag to start arrow keys and z to move and jump (it is in v.5.0 so there might be a glitch or two) https://scratch.mit.edu/projects/886822534/remixtree/
spriters resource notes: a updated sonic game engine is coming soon ************history****of****engine******************************** v.0.1 game engine released v.0.2 spindash added v.0.3 biggest update yet the sonic 1 intro added and new pixel art v.3.1 fixed intro v.4.0 one of the best updates ever changed the amount of acts from 1 to 2 and a lot of bugs were fixed so start making your own levels with this engine v.4.1 no more spindash and tails is now here v.4.2 something updated v.5.0 now sonic has a badnick to beat (badnick is still a test)