Warpspawn games has a vampire hunting game called Methuselah designed to be played on a chessboard with a custom set of cards. One side plays Dracula and his minions, the other the vampire hunter and his assistants.
I think that some of the ideas could easily be lifted for use in more traditional miniatures games.
John Cooper has sets of downloadable hexes for making your own wargames maps.
Lou Coatney offers Stalingrad Attacked, a free, complete board wargame. Coatney is a veteran game designer with a number of published designs, including Dark Crusade.
Dracula’s Feast: New Blood is a print and play game of logical deduction for 4 – 8 players.
Village Pillage is a print-and-play card game in which 2 – 5 players compete to turn their villages into kingdoms.