Kung Fu Grandpa.
Kung Fu Grandpa is a side-scrolling beat-em-up game where you play as a grandpa who's just tired of the fighting going on outside his home, and is now taking matters into his own hands. Punch and kick everything and everyone in your way as you try to bring peace back to your neighborhood. Pickup money you can use to upgrade your fighting skills, as well as weapons you can use to further beat up anything that walks into your general direction. You may be old, but that doesn't mean you don't pack a mean punch behind your fists!