The only problem I have with StepMania is the interface. It tries to be too close to DDR to be a really pretty app, but it also tries to throw in too much eye candy to be an authentic-looking DDR clone. The result is that it comes off looking like it was made by DDR fanboys trying to make an app that looks "cool". If it tried harder to copy DDR's interface, *or* if it abandoned that goal and developed its own look and feel, Stepmania would be a far more attractive game.