Music and sound are omnipresent companions of computer and electronic games. Often understood as an equivalent to film scores their role oscillates between pure ornament and a tool for additional "pacing" of actions and plot. Image and sound should thus usually correspond. But on a purely physiological level music creates bodily effects in the player, effects that are possibly beyond the reach of the player‘s rational control over himself – they create measurable affects – via music the players body is physiologically connected to the gaming system. The music plays with the player‘s body – for the better or the worse in terms of the game. The talk presents both a critical introduction into research conducted on body-music-synchronizations and discusses the results of a recent study on the physiological and psychological effects of music and computer games.