Use arrows or w,a,s,d to move and jump, and space to selector go through cut scenes.
Doesn't play next level. I will try to fix if possible, but everything looks normal enough. I've changed most of the noises to a small scream and made everything either very small or very very large. Sonic is also almost too small to see. !Helpful Hint! The goal at the end of the levels is very small and slightly above the ground. Searching might be needed.