This post is on modeling a 54mm briadge, but the techniques could be used for any scale.
Dark Crystal was a strange movie, but here’s an RPG based on the Jim Henson film.
Here are a set of Very Simple Generic Miniatures Rules.
Mutant Hunter Assassin is a free solo wargame.
Matakishi’s Tea House offers Crom!, a set of free wargames rules for playing Conan style fantasy skirmishes.