Traveling Story
Light a few candles and turn off the lights. Sit in a circle around the candles. Ask someone to begin the story. He has one minute to come up with a beginning. After one minute, the person to his right takes up the story for one minute. The story is passed from person to person, with each person adding to the story for one minute. Try to make the story as scary as possible.
Murder Mystery
To play a murder-mystery game, you will need to come up with a story line beforehand. Before your guests come over, lay out any clues, such as a bloody knife or footprints. Each guest will get a card with his character and a character description. The murderer's identity will need to be kept secret, of course. As the story unravels and more clues are discovered, the players will begin to weed out the innocent characters and will discover "who-dun-it."
Ouija Board
A Ouija board can be a fun addition to a Halloween party, but you need to make sure your guests are comfortable with the idea. A Ouija board features letters and numbers, the words "hello" and "good bye," and a plastic or wooden pointer called a planchette. The players place their fingertips on the planchette and ask a question. The pointer spells out the answer, which is supposedly from beyond the grave.
Sardines
This game requires a lot of supervision, but is fun and sends a little shiver up your spine. Sardines is played outside after dark. It is very much like Hide and Seek, but reversed. One person hides and everyone else looks for him. As the other guests find him, they quietly climb into the hiding space with him. The last person to find him is the next person to hide first. Hiding by yourself in the dark is pretty scary, and as the seekers dwindle and only one or two people are left searching, their hearts will begin to pound.