Great game idea, it was quite a fun experience after i found out how to play the game. The restart button didn't work for me. Other than that with a bit of polish it has great potential!
Glad you enjoyed it, I'll putting the instructions into the main menu or the game itself; an oversight on my part.
I'll take a look into that restart button, did it by chance happen when the Dark Fog reached "0" as other players have informed me this caused an sort of freezing issue?