Cheers for the comment, yes, mountains, lakes and sea tiles are impassible but there are flying units (right now only a Griffin). I won't add roads but I did consider it, I don't think it would be fun. I'm not sure if buildings in general are really needed but I am thinking about adding a fort in addition to the towers. I'm not thinking about the release / creator page just yet, there is quite a bit more development to do.