Action games ask players to test their reflexes and to punch, slash, shoot, or throw as strategically and accurately as possible so as to make their way through a series of levels. These games may feature hand-to-hand combat and sophisticated weaponry and obstacles. Examples of action games include Street Fighter, Hidden Blade, Pac-Man, and Super Mario Bros. Shooter games typically have a first-person shooter perspective, allowing players to feel like they are actually holding the weapon and are physically immersed in the drama. They require players not only to shoot opponents, but also to think strategically about which weapon to use and when. There is frequently an ultimate goal, and players must negotiate a number of variables through multiple levels to achieve it. Popular shooter games include Halo, Doom, and Call of Duty