Titan Rampant is a free variant for the commercial Dragon Rampant rules. Ownership or access to Dragon Rampant is required for play.
Miniatures Rules
Free Project Z Rules From Warlord
Warlord Games is offering a free pdf of their Project Z zombie miniatures rules.
Frostgrave House Rules
Here are a set of houserules for Osprey Publishing’s Frostgrave.
Full Command Fantasy Warfare
Full Command Fantasy Warfare is a set of free wargames rules for hex-based fantasy games.
Dark Ages Rules For Lion Rampant
Designed for medieval battles, Lion Rampant is one of Osprey Publishing’s well-received rules sets. Landwasters and Raven Feeders is a set of modifications for the rules for the Dark Ages. I have a large number of Viking and Norman figures, so this is of great interest to me.