The third and final factor is, like with Call of Duty, the journey that the game takes you through. However, this is not a journey with the simple goal of getting five stars on every song in the game. No, this is your legendary journey to the top, as your brilliant playing takes you from your parents' garage to the Rock'n'Roll hall of fame. While at first you are confined to taking the subway to your upcoming gigs, soon enough you have your own private plane and you're touring the world. Congratulations, you have become a rock god.
Then suddenly it's over. You've gotten as far as you can. There are no hoards of groupies that worship the ground you walk on. There are no huge parties where you are the center of attention. You've finished the game, and that was all it had to offer.
Of course, I'd be a madman if I suddenly started demanding that all games provide us with sex and drugs lest they be branded as unworthy of our money. The entire notion of it is silly, really. Besides, as anybody will tell you, the journey is always the best part of an adventure. The thing with the rhythm games is that the journey is next to impossible to relive without buying a new game. The only way to restart it is to delete your saves so the game forgets you ever reached the top, and even then you've already played most of these songs to death. So the only solution is to completely reset the entire experience by buying a new game.
By this point you might or might not be asking yourself: "Am I stupid for essentially buying the same game over and over again?" Of course you're not. If you buy the same game over and over, then the only logical explanation would be that you buy it because you love it. Now how is it stupid to buy something you enjoy? The reset button is not a way to discourage people from buying similar games, but simply to provide an explanation as to how you can find enjoyment from having the very same experience as before. Just because games like these are made for no other reason than to make money, it doesn't mean that you can't find them enjoyable. Sure, it does get quite expensive, but there are always methods to circumvent that. In the end, these are sequels we are talking about and as sequels they fulfill their jobs. What more can one really ask for?
Maybe some sex and drugs?
Ben Carlander has been a rock God three times now and is still waiting for people to worship him.