I KNOW for a fact that they work.
My neighbor was this old dude and he was kinda senile and he used to make these groaning and mumbling noises when he fell outside of his apartment.
Well, one day he died and he went off to where the dead people go.
I felt bad for his wife, so I brought over my "Ouija Board" and some chocolate pudding.
we pulled the thing out of the box and then we got to using it and we wrote down everything that happened - hoping that her husband would notice from wherever he was and take some time out to talk to us via that thing.
SURE ENOUGH we were blown away by what we saw on that paper.
OWWOWOODIDWEOWWEOWWPPTTHAISDFWOWO
that was what it said.
it was uncanny.
that is totally like what he sounded like when he fell down outside of the house during one of his mumbling and falling escapades.
also - that game Hungry Hungry Hippo also lets you talk to the dead.
but only dead people that are hungry. and hippos. and want marbles.