I don't know if this is a bug or just a result of it being a demo, but when you eventually get a game over, the jingle that plays loops. Other than that, the game is really well made! It can be a little hard to figure out what button to press at times (like with the suisei kill microgame), and having x be the a button is a little unintuitive, since usually that's z, but aside from those minor complaints that are more quality of life issues than actual problems with the game, I can't really think of anything to improve the game other than adding more microgames as time goes on. Keep up the good work!