This is pretty impressive for your first finished game, so congrats on that! I really like the art and animations, and with the music the whole thing was very relaxing and enjoyable! A couple things I might change is letting the player use WASD instead of the arrow keys to move as it feels a little more natural, and the bit a couple of people have already mentioned about the player not moving with the moving platform. (A way you could do this is by setting an onCollisionEnter2D event so that when the player touches a moving platform, and then an onCollsionExit2D event where they're unparented from the platform when they jump, just in case you want to patch this later or for your future projects) overall, really great job for your first game! Keep at it and I'm sure the next one will be even better!