You are haunted by your past failures! But don't worry, they are actually pretty useful!
I love the twist on the classic - instead of leaving your body there when you die, they turn into a ghost. Manipulating them to jump on their head at the right time and clear obstacles is so satisfying.
The graphical style is very oldschool, monochrome but expressive, and never have I found myself confused of what I was seeing. Great presentation!
The camera I found a bit strange. I see the effort to give it that "technological limitation", just like the graphics, but sometimes during the level it cuts off certain portions that are important to see. Like in the last jump, where you jump up, camera pans up, and you can't see the ghost you are aiming for below.
Beside that, a lovely experience.
And the addition of a timer makes me itch to attempt the game again to improve my time.
Awesome entry!