I messed with an Ouija Board when I was younger, thinking it was innocent & harmless. The tray that is pushed around with the fingers of two people moved by itself without either of us touching it. We asked several questions & it spelled out intelligible thjings. Then I asked the question, "Who is Jesus Christ?" It spelled out without us pushing it around, "Go to hell."
I burned the board & tray. Don't mess with anything having to do with any form of evil or have it in your house.
Someone (someone present and touching the thingie, or more than one person) is always moving it. If not on purpose, then random muscle twitches and the unsteadiness of your hand being held on something like that will move it a bit. Then you get excited, scared, and it seems to move more.
Want to test this? You don't even have to play the game. Just set the thingie on the board and ask your question (you're asking no one, so it doesn't count as necromancy). But DON'T TOUCH THE THINGIE. Watch. Wait. Don't forget to use the bathroom, drink water, and eat food. You're going to be there for a very long time waiting for the "demons" to do this simple task.
Maybe that's not enough? Think your hand is really steady, and you're not the one moving it? Don't want to "test" the evil spirit world of the cheap, waste-of-money board game? Unfold a paperclip and turn it into a loose "V." Turn it upside-down. Hold it up with the tip of a butterknife. Try to hold it steady enough so that the paperclip "stands" on your kitchen table, without trembling or moving. Good luck.
Anyone who wants to test this claim
with the board can
securely blindfold the participants and sit them down at the board without letting them see how its oriented. Put their hands on the thingie. Watch the "demons" either do nothing or spell demonic threats like "LM" and "ZRP."
It was originally sold as a parlour game that was not considered to have anything to do with "spirits." It's as if, decades after basketball was invented, some nut decided that a basketball was secretly a way to communicate with spirits. Throw it at the basket: if it goes in, "yes." If not, no. Okay, great communication system there, demons.
It's a silly game that people use to scare themselves or their friends. I appreciate that you had a scary experience, but I feel certain that no demons were involved.
Regardless, Ouija boards (a silly game) have
literally nothing to do with Dungeons and Dragons, which was originally a game of imagined exploration that involved resource management (food, torches, etc) more than it did anything else.