I could not make it past the third level. Overall the pixel art is good and I loved the idea with the ghosts. I don't know if it has been done before but for me it was innovative.

I got to play this game before the browser version stopped working but didn't rate it at the time so not 100% accurate. However I liked your ghost idea where they only move when you don't look, however, the 3rd level was just a loop so I couldn't progress past that.