The fact that ghosts always smash into the "door" (which looks like a wall) regardless of color is really odd. The ghosts should *pass through* if the color matches and smash if it doesn't.
When the speed is high, a single mistake can lead to a cascade of errors. There should be a grace period to allow recovery. 3 stars. -1 for no mute.

have a high score board

I really like this game. It's got good design in addition to being simple and fun. Good job!