The current trend toward hybrid roleplaying miniatures game has been a lot of fun. I’ve played fun games that feature pirates, African safaris, Victorian street gangs, and of course, my own horror games tend in that direction.
Bump In The Night is a free RPG that I think could easily be modified for use as a role playing oriented miniatures game. At the very least, it has some good ideas.
Things is a set of free wargames rules for science fiction / action / horror skirmishes, inspired by movies such as “The Thing.”
Blue Moon Manufacturing offers its Things That Go Bump In the Night rules for their excellent gothic horror figures. There are rules for various games, including werewolves, vampires, Sleepy Hollow, horror in London and more.
De Bellis Mortuus is a set of free wargames rules — based on DBA — for playing out games set in the Zombie apocalypse.