Have you ever wanted to practice your favorite song on HD then beat your old score but lose a bunch of PP because you had a lower acc? Well this would be the mod for you. With this mod enabled you would be able to play songs with what ever mods you want, except the final score won't be submitted online, therefore you would be free to practice other mods without fear of losing PP or accuracy. The only place your scores would be saved is in your local scores but at the same time contribute to your exp and play count.