Act of Fury forces you to practically headbutt bullets in order to stay alive, making it a game of finely tuned chaos as you dance in and out of danger without the safety net of ranged combat to keep you safe; a fun and chaotic bullet 'hell' experience.
Overall, though, Act of Fury: Kraine's Revenge proves that revenge doesn't always have to be served cold. Sometimes, when vengeance is all sound and fury and hot-blooded madness, the results can still be a pretty tasty dish.
Act of Fury is a perfect fit for the iPhone; it's uncomplicated, good looking, and probably the easiest game to pick up and play that I've, er…picked up and played. It's also cruel, frustrating, and at times you'll swear it's just being unfair.