I used to run a one-shot RPG story every year around Halloween. Some years it was, naturally, Call of Cthulhu. At least one year I ran a game centered on the Internecivus raptus. I ran Wraith: The Oblivion (which you know I loved) and I ran a spooky fantasy-horror story (driven by the SAGA System) about pumpkins being used to gestate a puppet race of homicidal dopplegängers. For a while, I looked forward to these Halloween games for weeks and weeks in advance, creating props and mixing CDs. They were my Halloween parties.
The Halloween games never caught on here in Atlanta. People would seldom make time during Halloween week to play games, and the one time I finally got some folks together, it went pretty badly. I planned a story that was much too long and played in a florescent-lit conference room — it was the worst year by far. The core idea of the adventure was okay, though, I thought. Here’s the pitch I emailed around (I got three players out of it):