SeemsGood
I played it, also you should make the blue pads, the speed thingies and the invisible cube portal as visible so it'll be less confusing. Also use the S special block (you can find it on the portals, jump rings and etc.) to prevent the player from keeping dashing at the dash jump ring (the triangle green one). Also change the block design right before before the piano (the one at 0:08). You can also skip one jump at 0:08. Pretty good still.
zybor
this is the kind of healthy GD should happen.
ForeverBound
Then let's make more of this!