'INFRAMON: Trick or Treat'is a first person horror game designed especially for Halloween and based in the legend of the stingy Jack. The game is FREE and available for PC.
Trick or Treat is an enjoyable short game with some complex puzzles and some scares along the way.
I've rated it 7 in the context that it's a free game as there's a lot of imagination which has been invested into the game, the puzzles are more difficult than your standard game of this genre and I felt that most of the scares were well implemented.
The downsides of the game would be the poor AI and a few glitches here and there, the storyline seems like it was added into the game as a filler rather than being what the game was built around, however for something this short it doesn't really matter too much.
For the ~1 hour of gameplay it's very much worth a download.
Video of the gameplay can be found here (it'll not be published until ~10 after this post): Youtube.com