Italian Wars is a set of free wargames rules for games set in the Renaissance.
Rules: Pike and Shot
Bushi Samurai Rules
Bushi is a set of free wargames rules for Samurai warfare. Each stand represents a band of warriors. Two bands equal 500 men.
Naginata Skirmish Rules
Naginata is a set of free wargames rules for samurai skirmishes.
Legends of the Rising Sun
Legends of the Rising Sun is a collection of special rules and unit lists for using Legends of the Old West/Lord of the Rings rules for samurai. From Wargames Illustrated 278. Direct PDF download of Legends of the Rising Sun.
Very Civile Actions
Very Civile Actions is a set of free wargames rules for the English Civil War. Like all games from Perfect Captain, this is very professionally done.