The platform DOESN'T follow the mouse. Use your arrow keys to move it. When the ball hits the platform, you get a point. When it touches the pink part it will disappear for half a second and lose a point. No, the ball disappearing is not a glitch.
Tell me in the comments if there are any glitches and I will fix them ASAP! Thanks to the original creator @nuacfa! I don't know who the music is by, but I backpacked it from one of @dressygirl's projects.