The Savage Worlds role playing system has attracted the attention of a lot of miniature wargamers becuase it is so easily usable as a miniatures game. There’s even a free subset of the role playing rules called Savage Worlds Showdown, designed specifically for miniatures skirmish.
Here’s a free expansion for Savage Worlds for playing Lord of the Rings Skirmish Games.
Here’s a downloadable playsheet for Games Workshop’s Lord of the Rings game.
Mazes and Minotaurs is a free role playing game of heroic adventure in ancient Greece.
In the world of Glider Pit Gladiators,
Two to six players control primitive gliders descending into a deep, sheer-walled pit. Within this natural arena the glider pilots engage in ritualistic, nonlethal gladiatorial combat. A combination of martial and flying skills is required for success in the glider-pit. Every decision a player makes, from the selection of weapons to the anticipation of fickle air currents, can be the first step down a road to glory… or disaster.
I think that this would make a really good and visually striking miniatures game.