Grunt, Growl and Tear is Invisible City’s free board game of monster combat. It’s “A no-holds barred game of monster combat where you can rip limbs from your opponents and add them to your body, making yourself more powerful.”
Dungeoneering dot Net has a nice selection of printable terrain tiles ostensibly for use with the Dungeons and Dragons miniatures game, but which would also work with any number of dungeon crawl games — of which there are many free ones available on this site.
Cheapass Games offers Renfield, a card game about parts, tools, gravestones and “yummy delicious bugs.”
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.
Years ago, GDW used to hand out copies of a simple Frank Chadwick game called Battle for Moscow. I’ve got a copy, and have used it to introduce players to board style hex wargaming. If you dont’ have a copy of this classic, you can download it here.