what did you make it with?
Game maker
I don't think this qualifies as a demo.
me neither but for only 3 hours of work it looks ok, its more of a proof of concept
To make a proof of concept your initial concept should be original and require proving. Side scrolling games have been made, and do has Pokemon, mixing the two a new concept does not make. Other than that it looks like you need a better skybox and level design.