I liked the burning effect et the pitch of the game. First I was afraid to cross the water, I think I understand the hint message like "don't go there" :D But you've got many mechanics to play with to create nice environment with specificities. You could have fire fighters trying to counter you somehow.
Well and maybe the view can be a bit disturbing because when you see your flame being far away, you cannot tell easily if your next move will get you to the big fire.