I had thought about this as a game because for me Scale Racer sux. It speeds up quickly too fast and each time you crash you must start over. You choose the scale you want to practice for example, I thought maybe the game might start out on a pentatonic scale at position 1. Then move to position 2, to 3, etc... After you make it through the entire set of patterns it moves up in speed and then runs back through the 5 positions. Or you could choose to run just the one pattern and have it step up in speed each time you make it through correctly. If you miss, it makes you run through the pattern again at that same speed. You choose the starting speed and whether or not it speeds up or stays the same throughout the practice run.