Hoplomachia is a set of free wargames rules for the Peloponnesian War.
The Miniature Wargaming Editor
2d6 Sword and Sorcery
2d6 Sword and Sorcery from Two Hour Wargames is available as a free pdf download. It is designed as a beer-and-pretzels style adventure game.
Dien Bien Phu Board Game
Dien Bien Phu: Trenches In The Tropics is a free print-and-play board game of the battle between French and Vietminh forces.
Titan Rampant – SciFi Dragon Rampant Variant
Titan Rampant is a free variant for the commercial Dragon Rampant rules. Ownership or access to Dragon Rampant is required for play.