This one's a little unfair, since it's not open to the public, except by invitation. But this bi-annual installation at the home of the head of local computer game company Origin Games (with the collaboration of Nintendo) is so spectacular - boasting such audience-participation treats as an indoor boat ride, rope swing, and numerous hidden doors and secret passages - that if you can somehow wangle an invite, it's something you shouldn't miss. The best of the rest? You'll have to wait for the Chronicle's haunted house guide coming out the week before Halloween.
