Because I know you can't get enough of the Halloween links, and also because I couldn't find anything else today, I present K-Mart's Haunted House. The idea being that by providing your email address, K-Mart can bombard you 'til the end of time with spam. Well, the joke's on them. You only have to give your address if you want to save your place in the game. Which you may or may not want to do.
I haven't played enough of the game to determine if it's worth getting K-Mart spam for, but it seems well enough done and suitable for kids. There's music and some sound effects, but you can kill it with the speaker button at the lower right of the screen.