Thanks for feedback! :) That's the real problem with unpredictable results of hits, I can't solve it :/
Fog got thicker if last level has fog too and all you can see is fire on the bomb and smoke trace - sorry, that is the feature :D Probably I'll make option to change game speed later, but now I really want to release it (I've wanted it for too long :) ) Grab it now, because I should turn off the free download option soon.