Start each person off with a small bag and about 10 pieces of candy. You can write the person's name on the bag. Next, ask them to help you make a list of the "magic words" to hang up for all to see.
The list can include: GHOST, PUMPKIN, WITCH, CANDY, HALLOWEEN, and whatever else you might want to add.
Hang up the list in a place everyone can see it.
Set a specific time for the game to end.
If someone is caught saying one of the words on the list, the one who says the word must give the first one who hears it a piece of candy from their bag.
The person with the most candy when the time is up wins.
"Bucket-O-Body Parts!"
This is a great game because you'll have to use your imagination. First, the room has to be very dark. You could light a couple of candles to add the atmosphere. Everyone sits down in a circle, and a bowl is passed around with "body parts" in it. The guests must feel the contents of the bowl, and try to guess what is really in there.
Here are some ideas to get you started.....
Cooked spaghetti can be passed off as veins. Peeled grapes can be used for eyeballs. Candy Corn can be used for teeth. A Jello mold may be used for a brain, and mashed potatoes can be used for "guts". Get creative!