A detachment of red Stickmen is moving towards your castle, who want to capture it. In the new online game Castle Keeper you will help your blue character to defend. In front of you, your character will be visible on the screen, which will be on the wall with a bow in his hands. Opponents will move in your direction through a gap in the defenses. You will have to choose your targets and then draw your bow and start shooting arrows at the enemies. By shooting accurately, you will destroy your opponents and get points for it. When a certain amount of them accumulate, you can purchase a new bow and ammunition for the hero.