DOUBLE CLICK THE FLAG!!!!!!!!!!! Arrow keys to move, up arrow to jump. All of the levels are possible. Try to get the world record! (Sorry if this is a bit too short; it takes time for me to place everything.)
Thanks to Nintendo for the music. Here is where I got it: https://downloads.khinsider.com/game-soundtracks/album/super-mario-galaxy/1-09%2520The%2520Honeyhive.mp3
