I've never wanted to be a ghost bastard so bad.
Seriously though, this game looks awesome, and your GDD was laid out beautifully. While there wasn't really a losing condition, I think it could be build as something similar to Kick the Buddy, where there isn't as much a losing condition as there are simply better and better ways to spook people. Your layout was very clean, and the visual aids were well made and easy to understand. Overall, lovely job on the jam.