Hello. Thank you all for your answers. For me it is extremely instructive.
Now I work on improving my game, but I do not have too much time - "work in full time". I'm looking for an appropriate graphic style. The image at the top shows the changed game graphics. Would like to also add some new animation terrain as water, steam or light.
By the end of the week should I do some new things. Improved game I will add to the Arcade on Saturday. Until then, I will be adding on to twitter every change in the game. Your opinion is very important for me, also critical.