The Jim Bowens Disturbia Yahoo Group has free rules for the Gotterdammerung WWII-Horror game.
Matt Fritz has these free wargames rules for gaming the Battle of Midway. The rules are designed for 1/700 ship and airplanes models but Matt also provides paper counters and airplanes.
Crossfire is one of the more innovative — and more enjoyable miniatures games I’ve played. But everyone who plays it seems to have their own house rules. Tim Marshall has a set of house rules that have to be the most comprehensive I’ve seen.
The theme of Historicon 2004 is “D-Day and the Liberation of Europe.” If you’re not going, you can still be there in spirit by playing this set of Fast Play D-Day free wargames rules. Author Matt Fritz also provides paper soldiers, landing craft and bunkers. It’s everything you need for a quick D-Day game.