You must know this was of my first gaming experiences because of the arcade machine that was in one of my village's bars.
I never finished the normal mode... until todady. It was hard, not only its an arcade and it must take your money but you have your greatest enemy: you. Thats a clever manner to play: you can be so powerful by the upgrades but you can hurt yourself.

I really love this game but I can put it any higher either. The music is great.