"Beat 'em Up" is a genre of video games where players control characters to fight against waves of enemies. The gameplay typically involves hand-to-hand combat, using punches, kicks, and special moves to defeat opponents. Players often progress through levels, facing stronger enemies and bosses as they advance. These games often feature cooperative multiplayer modes, allowing friends to team up and fight together. Popular examples of the genre include titles like Streets of Rage, Final Fight, and Double Dragon. The genre has evolved over the years, incorporating various elements from other game types while maintaining its core combat mechanics.