A very interesting concept! Caught me pretty off guard when reading the description but was fun to see in action. The games themselves were pretty simple, but I imagine they were basically just vehicles with which to show off the tech. I did try loading in one of the other sprites as a level to see what would happen, and it mostly functioned correctly, so that was interesting to see (I put in tennis-gal, and the tennis game ran mostly normally, but would have some visual errors occasionally, and the score counted into the negatives instead).
Music was pretty nice, but it would get a little maddening after it layers on top of itself whenever you go back to the start screen.