Really great and simple mechanic that fits the theme perfectly. Also really fitting 1bit art style! If I would have to give some feedback it would be that the current 'obstacles' rely more on patience (because of the ghost) than skill or understanding. But as you said you had a lot of ideas but not much time, and I think the basis for this game is super good and allows for many different puzzles. Hope I am not sounding too critical just wanted to give some feedback. Nonetheless a great submission, congratz!!