Serious games are games with certain functions, such as inducing sleep or preventing sleepiness. To prove the effectiveness of these serious games, the experiment was conducted by combining several pieces of music that help improve concentration in the game while playing simple computer games. Through the player's brainwave analysis, we studied the effects of serious games on human brain waves. In this paper, it was confirmed that the existing concentration effect can be obtained through the development of functional contents that combine music with game contents to improve concentration through games, and the technology to control human brain waves is considered worthy of continuous study.