Action games are a genre of video games that emphasize physical challenges, hand-eye coordination, and reaction-time. They are divided into various sub-genres including fighting games, beat 'em ups, shooter games, and platform games. Each of these types of games requires players to use their reflexes to overcome obstacles and complete goals.
Action games are often difficult to master, as they require hand-eye coordination, quick reactions, and the ability to overcome obstacles under pressure. The most complex action games tend to feature highly detailed graphics and more complex gameplay. They also place a high priority on smooth movement. Many of the best action games have minimal storylines.