Fortunately, I have a lot of music to listen to...
As others mentioned, this is the kind of game you can play for a looooong time.
Around the halfway point, I thought it was getting too easy, but by the end it really was intense.
The biggest problem is that mouse clicks seem to be sluggish to respond, especially on menu screens. Don't know if that is my fault, but it is more of an annoyance than a problem, anyway. Besides that, it is a very great game.