It's the console equivalent of a musical groovebox. Selling the idea that you just need to buy this device and you can make music/games too! It'll be a lot harder but it'll be more "fun" because you're limited creatively.
It would be neat if it was easier to broadcast the experience of playing the game to more folks like how playing back a song recorded from a groovebox doesn't require much more than a device with speakers than can play an audio file.