Shooter games are a subgenre of action game, which often test the player's speed and reaction time. Because shooters make up the majority of action games, it is a fairly wide subgenre. It includes many subgenres that have the commonality of focusing "on the actions of the avatar using some sort of weapon. Usually this weapon is a gun, or some other long-range weapon". A common resource found in many shooter games is ammunition. Most commonly, the purpose of a shooter game is to shoot opponents and proceed through missions without dying yourself.