There was a 2D platformer that I played in the mid-to-late 90's where you were a caveman fighting dinosaurs and whatnot. The weapons were things like axes, stone wheels, and fire. It only had two buttons: jump and attack. When you pressed the attack button, you threw out a small wheel, but if you held it your caveman guy would wind up his arm and throw out a huge wheel. Anyone remember what it was called?