An elderly martial artist named John decided to fight back against the street thugs who operate in his city. You will help him in this new exciting online game The Courage of an American Grandfather. In front of you, your character will be visible on the screen, which will be located in a certain area. Having noticed the enemy, you will enter into a duel with him. By controlling the actions of your hero, you will inflict a series of blows to the body and head of the enemy and also carry out various tricks. Your task is to knock out the enemy and for this you will be given a certain number of points in the game The Courage of an American Grandfather.