FreeGameDev

As you can see in the shot, trying to put a path tile will hide the ice tiles underneath.
I would except a transparent effect. Is this a missing feature or a bug?

Basically what is happening is intended.
What you need to do is add an layer, put it above the snow (in z-pos, just put the snow on 0 and the path on 1), and make sure that the path is solid else tux won't interact with it.
Hopefully this helped. (oh yeah also the layer thing is in objects)

Thanks!
I followed your instructions and now my worldmap look great!

It does! But I think you missed a tile. Here, this is a Screenshot what it looks like with the missing tile added

Side note: The tiles being used for the bridge are dock tiles, there are other tiles meant for bridges that are either blue or brown.

If That's the case, the progress of Chomwitt's map might look like this:

and how u make Tux walk ?

now here to make tux walk we need to make sprite change and just don't use png files here use sprite files here.