In Geisterburg, players take turns in the role of Spooky, a ghost being led by the other ghosts through a castle on a treasure hunt.

In more detail, the player who is Spooky is blindfolded by donning a mask, then they start poking around Geisterburg with a magnetic pole, with their fellow players offering advice on where to move and (possibly) what to avoid given that adult ghosts can also be found within the castle and the kids want to leave them alone in order to find what they need before time runs out!