I played Rhythm Fireworks 2 for awhile and was totally engrossed in matching keystrokes with the beat of the music. This game is very similar to such video game hits Guitar Hero, Rock Band and Dance, Dance, revolution. Although these games keep score, the real challenge is to keep in time with the music. I would say they are more "pass time" than game.
Nintendo Wii really embraced this form of game in many of it's games. Some games demanded peripherals such as drum kits and guitars (Rock Band) or a mat in which you would step on arrows (DDR) that would make the user use their entire body. I know elementary teachers that have used similar games during indoor recess, a phenomenon in Canada when the weather is too cold, to make sure students burn off excess energy.
These games have taken video games beyond just hand/eye coordination and incorporated a full body experience which requires concentration and physical coordination. It will be interesting to see where this genre takes us to in the future.