Fun game! I enjoyed it.
Liked the pacman homage and it was a nice take on the theme, really original and innovative.
It's a really interesting mechanic to have the ghosts of your past restrict your future movements. One thing I didn't realize on the first playthrough and was a really nice touch was that your score would decrease over time, pushing you to move more quickly.
I would definitely play something with these mechanics on my free time and enjoy it. An element of competition like a highscore leaderboard would hook me up a lot too.
I feel like it could've been more fun if it was faster at the start or if the map was smaller so you'd run into problems sooner. Maybe it was just me wanting a bigger challenge.
I don't know if there was music or not but I didn't get to hear it. I think an 8-bit spooky theme would fit nicely.
Great idea and nice work!