I have had so much fun on this title. It is this mechanic which made it so satisfying to play. Congrats on having such idea. It is just perfect utilisation of the given artset. I've been watching those sprites and was thinking "who the f would use this laying creature sprite" - and there we go!
I have noticed that clouds are distributed on layers in a way which creates an illusion of a 3D world. Perfect job.
Basically the game idea is simple and controls are easy which combined let user get the whole mechanic in like 10 seconds. It is really cool as some games really lack this feature and even after few minutes spent I am still not entirely sure what to do.