Ah, the old arrow sequence game. Often presumed to be a lame attempt to get people "Fit" by implementing a smelly vinyl-plastic sheet with arrow buttons to get people to get up off the couch (this is pre-kinect tech ) it's versatility is often overlooked because it's usual tackiness. These type of minigames can be implemented into platformers or rpgs as a fight sequence, or a training session. It has also been used for filler in certain move-based games, for example, my brother has a game based off of Kung Fu Panda, that implements this genera into the boss fights, which added a neat "cinematic" element and broke away from the normal double jump and press X routine.
Now, the demo itself has nothing graphical due to the fact that the uploader is being fixed. But, with some minor tweaking, you could easily add some elements such as an opponent, or a background.
I tried to make it as easy to understand as possible, if anyone wants me to explain anything let me know.
Oh, and one more thing, I added some random MIDI music files in the mix as well. Tell me if you recognize any.