Hammerfall is a gorgeous work-in-progress 2D game out of Russia. [...] The video does a good job of demonstrating the mechanic. Hammerfall’s gameplay is all about swinging around connected bodies. Your mouse directly controls the position of your ship; move it up and your ship flies up. Your weapon—usually a mace or sword—is attached to your ship via a hinge joint. It swings around on its own, but you soon learn to control it deliberately.