It has potential. But I really don't think it should be so fast paced. I mean, you could do the same idea without rushing into the player's screen with a new minigame everytime that has more often than not a different set of keys to play. I mean, if you don't want to freak out the player.
Beyond my scoring, I think you should really try updating the themes of your games. It is unnecesary to make it old themed.