I agree with DarkBloodbane, I don't like all the red.
I understand you want a red world, blue world etc. but having a scene that strongly one colour, might put people off (it hurts my eyes just looking at the screenshot, but I'm probably not you target market).
The character's clothes could be red, instead of its face and hands.
The edging you have on your platforms look nice. That should be enough red to convey the idea that it's a red world.
Alternatively, blend in lighter shades of red to tone down the strong red look. Like making the character's skin a pastel red instead of a strong red.